TY - CHAP A1 - Babcsan, N. A1 - Leitlmeier, D. A1 - Meier, M. A1 - Banhart, J. A1 - Garcia-Moreno, F. ED - Vignes-Adler, Michèle T1 - Measurements on cell walls and Plateau borders of particle stabilized foams T2 - A collection of papers presented at the 5th European Conference on Foams, Emulsions, and Applications, EUFOAM 2004 Y1 - 2005 PB - Elsevier CY - Amsterdam [u.a.] ER - TY - GEN A1 - Butt, Usman A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - Mechanism of drag reduction for circular cylinders with patterned surface T2 - International journal of heat and fluid flow Y1 - 2014 SN - 1879-2278 VL - Vol. 45 SP - 128 EP - 134 ER - TY - GEN A1 - Uhlig, Benedict A1 - Preuß, Ann-Christin A1 - Graf, Johann A1 - Neben, Matthias T1 - Messtechnische und simulative Untersuchung des Ölhaushalts an der Kolbengruppe T2 - MTZ - Motortechnische Zeitschrift N2 - Die Projektreihe Kolbenring-Öltransport dient der Untersuchung der tribologischen Zustände in der Kolbengruppe. Dabei wurde im ersten Projektabschnitt ein 0,5-l-Einzylinder-Forschungsmotor aufgebaut, der mit zahlreichen Sensoren ausgerüstet ist, um diese Zustände messtechnisch zu erfassen. Im zweiten, hier ausschnittsweise vorgestellten Projektabschnitt wurden zusätzliche Simulationsmodelle implementiert, die durch Abgleich mit den aufgezeichneten Messdaten an Genauigkeit gewinnen und zum Verständnis des Ölhaushalts in der Kolbengruppe erheblich beitragen. KW - Kolbenring Y1 - 2017 U6 - https://doi.org/10.1007/s35146-016-0175-4 SN - 2192-8843 SN - 0024-8525 VL - 78 IS - 2 SP - 76 EP - 81 ER - TY - GEN A1 - Meier, Martin A1 - Meyer, Antoine A1 - Mutabazi, Innocent A1 - Egbers, Christoph T1 - Microgravity experiments on thermo-electric flows T2 - 26th European Low Gravity Research Association Biennial Symposium and General Assembly, Granada (Spanien), September 24-27, 2019 Y1 - 2019 UR - https://www-docs.b-tu.de/fg-aerodynamik-stroemungslehre/public/PDF/Pubs/ELGRA2019_Book-of-abstracts.pdf SP - 293 EP - 294 ER - TY - JOUR A1 - Futterer, Birgit A1 - Gellert, Marcus A1 - Huschto, Michael A1 - Larcher, Thomas von A1 - Egbers, Christoph T1 - Microgravity Science on International Space Station (ISS): The Geoflow Experiment Y1 - 2006 ER - TY - CHAP A1 - Futterer, Birgit T1 - Minimierung von Diskretisierungsfehlern bei gitterunabhängiger Elektrodenpositionierung T2 - 62. Jahrestagung der Deutschen Geophysikalischen Gesellschaft im Jahr der Geowissenschaften Y1 - 2002 PB - Deutsche Geophysikalische Gesellschaft CY - Hannover ER - TY - GEN A1 - Kupka, Friedrich A1 - Zaussinger, Florian A1 - Montgomery, M. H. T1 - Mixing and overshooting in surface convection zones of DA white dwarfs: First results from ANTARES T2 - Monthly Notices of the Royal Astronomical Society Y1 - 2018 SN - 1365-2966 SN - 0035-8711 VL - 474 IS - 4 SP - 4660 EP - 4671 ER - TY - THES A1 - Haun, Peter T1 - Modelling of thermo-electro hydrodynamic (TEHD) convection N2 - In Thermo-Electro Hydrodynamics (TEHD), an electric field is applied to a fluid within a heated domain to induce thermal convection. The fluid and the electric field must meet specific conditions to establish a dielectrophoretic force that acts as a buoyancy force on the fluid. This buoyancy force is utilised in experiments to replicate gravitational buoyancy, explore resulting flow structures, or develop heat transfer systems without moving parts. In this study, the electric force field acting on a dielectric fluid in a capacitor is derived from the Maxwell equations and coupled with the Navier-Stokes equation for fluid motion. Furthermore, an Open Source Field Operation and Manipulation (OpenFOAM) solver is extended to incorporate TEHD momentum and energy-contributing terms. In a dimensional analysis, dimensionless parameters are derived and tested. Therefore, parameter studies in 2D approximations of planar and cylindrical geometries are done. Additionally, the 2D investigations are utilised to study the behaviour of heat transfer and boundary layer properties, and some scaling laws are derived. Finally, 3D spherical shell microgravity experiments are analysed and linked to the results of 3D numerical analysis. The results verify the derived methods, which are expanded and applied to the upcoming space experiment, AtmoFlow. Y1 - 2025 SN - 978-3-689-52666-5 U6 - https://doi.org/10.61061/ISBN_9783689526665 PB - Cuvillier Verlag CY - Göttingen ET - 1st edition ER - TY - GEN A1 - Gaillard, Yann A1 - Szabo, Peter A1 - Travnikov, Vadim A1 - Egbers, Christoph T1 - Modelling Thermo-Electrohydrodynamic Convection in Rotating Spherical Shell Using OpenFOAM ® T2 - OpenFOAM® Journal Y1 - 2025 U6 - https://doi.org/10.51560/ofj.v5.136 VL - 5 (2025) SP - 1 EP - 16 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Jehring, Lothar T1 - Modified Optical and Thermal Anemometers for Laminar and Turbulent Boundary Layers Investigation Y1 - 2005 ER - TY - CHAP A1 - Froitzheim, Andreas A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Momentum transport and flow structures in a wide gap fully turbulent Taylor-Couette flow T2 - Book of abstracts, 11th European Fluid Mechanics Conference (EFMC), 12-16 September, Seville, Spain Y1 - 2016 UR - http://www.efmc11.org/download/com/com_0647_WH3SGU.pdf ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Durst, F. T1 - Momentum transport and turbulent kinetic energy production in plane-channel flow Y1 - 2009 ER - TY - CHAP A1 - Larcher, Thomas von A1 - Harlander, Uwe A1 - Seelig, Torsten A1 - Randriamampianina, Anthony A1 - Viazzo, Stephane A1 - Vincze, Miklos T1 - Multiple scales in the thermally driven rotating annulus: time-series data analysis of experiments and numerics T2 - ICTW 19, Book of Abstracts, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany Y1 - 2015 SP - 40 EP - 41 CY - Cottbus ER - TY - GEN A1 - Schaffrath, Robert A1 - Stathopoulos, Panagiotis A1 - Schmitz, Andreas A1 - Nicke, Eberhard T1 - Multistage turbomachinery optimization for high-temperature heat pumps with the reverse rankine cycle T2 - Journal of turbomachinery N2 - The electrification of process heat generation will be a key to achieving carbon neutrality in the coming decades. One of the most promising approaches is to replace conventional heat supply systems with high-temperature heat pumps (HTHPs). A promising heat pump concept is based on the reverse Rankine cycle that uses water as its working fluid. By using turbomachinery for the compression process in this cycle, the performance of the HTHP can be increased compared to the volumetric displacement systems, like screw or piston compressors. Although the design of the compressor geometry can be done sequentially in relation to the HTHP cycle design, better results can be obtained by an approach that integrates turbomachinery and the thermodynamic cycle design. Against this background, an automated optimization method for a reverse Rankine HTHP with two radial turbo-compressors in series is presented. In contrast to the current state of the art, the presented novel optimization approach uses 3D computational fluid dynamics data to calculate the compressor’s performance. Furthermore, the integration of low-fidelity compressor specific reduced-order models are used to accelerate the gradient-free optimization process by a CO-Kriging surrogate model. The advantages of the novel approach are justified by comparing the numerical effort and the final values of the optimization objectives. KW - Reverse Rankine cycle KW - Turbomachinery optimization KW - Centrifugal compressor KW - Centrifugal compressors and pumps KW - Compressor Y1 - 2025 U6 - https://doi.org/10.1115/1.4068480 SN - 1528-8900 VL - 147 IS - 111003 SP - 111003-1 EP - 111003-12 PB - ASME CY - New York, NY ER - TY - GEN A1 - Larcher, Thomas von A1 - Harlander, Uwe A1 - Alexandrov, Kiril A1 - Wang, Yongtai T1 - Multivariate statistical data analysis methods for detecting baroclinic wave interactions in the thermally driven rotating annulus Y1 - 2010 ER - TY - CHAP A1 - Larcher, Thomas von A1 - Harlander, Uwe A1 - Egbers, Christoph T1 - Multivariate statistical data analysis methods for detecting baroclinic wave interactions in the thermally driven rotating annulus Y1 - 2010 UR - http://hal.archives-ouvertes.fr/docs/00/60/04/09/PDF/ec525_abstract_larcher.pdf ER - TY - CHAP A1 - Travnikov, Vadim A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - Natural Convection in rotating Spherical gap under the central Force Field Y1 - 2003 ER - TY - JOUR A1 - Futterer, Birgit A1 - Brucks, A. A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - Natural convection in sperical shells: dripping vortex flow for high Prandtl number fluids Y1 - 2006 ER - TY - CHAP A1 - Jehring, Lothar A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Near-wall flow measurements by means of miniaturized LDV flow sensor combined with hot-film anemometry Y1 - 2007 ER - TY - CHAP A1 - Augenstein, Edgar A1 - Egbers, Christoph A1 - Eckert, S. T1 - Neues Sensorkonzept zur Bestimmung der aerodynamischen Wand-Schubspannung Y1 - 2003 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Jehring, Lothar T1 - New Approach for Wall Shear Stress Measurements Y1 - 2004 ER - TY - GEN A1 - Harlander, Uwe A1 - Sukhanovskii, Andrei A1 - Abide, Stéphane A1 - Borcia, Ion-Dan A1 - Popova, Elene A1 - Rodda, Costanza A1 - Vasiliev, Andrei A1 - Vincze, Miklos T1 - New Laboratory Experiments to Study the Large-Scale Circulation and Climate Dynamics T2 - Atmosphere N2 - The large-scale flows of the oceans and the atmosphere are driven by a non-uniform surface heating over latitude, and rotation. For many years scientists try to understand these flows by doing laboratory experiments. In the present paper we discuss two rather new laboratory experiments designed to study certain aspects of the atmospheric circulation. One of the experiments, the differentially heated rotating annulus at the Brandenburg University of Technology (BTU) Cottbus, has a cooled inner cylinder and a heated outer wall. However, the structure of the atmospheric meridional circulation motivates a variation of this “classical” design. In the second experiment described, operational at the Institute of Continuous Media Mechanics (ICMM) in Perm, heating and cooling is performed at different vertical levels that resembles more the atmospheric situation. Recent results of both experiments are presented and discussed. Differences and consistencies are highlighted. Though many issues are still open we conclude that both setups have their merits. The variation with heating and cooling at different levels might be more suited to study processes in the transition zone between pure rotating convection and the zone of westerly winds. On the other hand, the simpler boundary conditions of the BTU experiment make this experiment easier to control. Y1 - 2023 UR - https://www.mdpi.com/2073-4433/14/5/836 U6 - https://doi.org/10.3390/atmos14050836 VL - 14 IS - 5 ER - TY - CHAP A1 - Zaussinger, Florian A1 - Egbers, Christoph A1 - Krebs, Andreas A1 - Travnikov, Vadim T1 - New results of the spherical convection experiment Geoflow IIc T2 - European Geosciences Union General Assembly 2017 Vienna, Austria, 23–28 April 2017 Y1 - 2017 UR - http://meetingorganizer.copernicus.org/EGU2017/EGU2017-7801.pdf N1 - EGU2017-7801 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - JOUR A1 - Hollerbach, Rainer A1 - Junk, M. A1 - Egbers, Christoph T1 - Non-axisymmetric instabilities in basic state spherical Couette flow Y1 - 2006 ER - TY - CHAP A1 - Futterer, Birgit A1 - Zaussinger, Florian A1 - Krebs, Andreas A1 - Egbers, Christoph T1 - Non-linear effects and associated instabilities in spherical Rayleigh-Benard experiments with variation of the viscosity contrast Y1 - 2011 ER - TY - CHAP A1 - Futterer, Birgit A1 - Larcher, Thomas von A1 - Egbers, Christoph T1 - Non-rotational and rotational regimes of spherical gap flows and their influence on thermal convection in a set-up with central force field Y1 - 2007 ER - TY - CHAP A1 - Futterer, Birgit A1 - Zaussinger, Florian A1 - Koch, Sandy A1 - Krebs, Andreas A1 - Egbers, Christoph T1 - Nonlinear effects and associated instabilities in iso-viscous and temperature-dependent viscous thermal convection in spherical shells, the geophysical flow simulation experiment integrated in Fluid Science Laboratory Y1 - 2011 ER - TY - JOUR A1 - Meier, M. T1 - Nonmetallic solid foams - a non-exhaustive overview Y1 - 2005 ER - TY - GEN A1 - Harlander, Uwe A1 - Borcia, Ion-Dan A1 - Krebs, Andreas T1 - Nonnormality increases variance of gravity waves trapped in a tilted box T2 - Geophysical & Astrophysical Fluid Dynamics Y1 - 2019 U6 - https://doi.org/10.1080/03091929.2018.1549660 SN - 1029-041 VL - 113 IS - 5/6 SP - 602 EP - 622 ER - TY - CHAP A1 - Rodda, Costanza A1 - Borcia, Ion-Dan A1 - Hien, Steffen A1 - Achatz, Ulrich A1 - Le Gal, Patrice A1 - Harlander, Uwe T1 - Numerical and experimental study of inertia-gravity waves in the differentially heated rotating annulus T2 - European Geosciences Union, General Assembly 2018, Vienna, Austria, 8–13 April 2018 Y1 - 2018 UR - https://meetingorganizer.copernicus.org/EGU2018/EGU2018-7385-1.pdf N1 - EGU2018-7385-1 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - JOUR A1 - Scurtu, Nicoleta A1 - Stücke, Peter A1 - Egbers, Christoph T1 - Numerical and experimental study of the flow in an eccentric Couette - Taylor system with small gap Y1 - 2008 ER - TY - JOUR A1 - Scurtu, Nicoleta A1 - Bänsch, E. T1 - Numerical and Stability Aspects of Non-Newtonain Fluid Flow Y1 - 2005 UR - http://www3.interscience.wiley.com/cgi-bin/jhome/91016652 ER - TY - CHAP A1 - Scurtu, Nicoleta A1 - Egbers, Christoph T1 - Numerical determination of the particle separation efficiency of industrial filters Y1 - 2007 ER - TY - CHAP A1 - Junk, M. A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - Numerical investigation of the flow in wide spherical gaps Y1 - 2001 ER - TY - GEN A1 - Abu Khass, Omar A1 - Cristofaro, Marco A1 - Kopparthy, Saketh Bharadwaj A1 - Klöppel, Steffen A1 - Nicke, Eberhard A1 - Stathopoulos, Panagiotis T1 - Numerical investigation of two-phase water ejectors for high-temperature heat pumps : insights into flow behavior and shock wave dynamics T2 - Proceedings of ASME Turbo Expo 2025 : Turbomachinery Technical Conference and Exposition, June 16-20, 2025, Memphis, Tennessee : Volume 4 : Controls, Diagnostics & Instrumentation; Cycle Innovations; Education; Electric Power N2 - Two-phase water ejectors can serve as a secondary steam compression mechanism in high-temperature heat pump (HTHP) systems. By integrating an ejector, high-pressure water can be combined with hot steam from the compressor, achieving simultaneous cooling and pressure increase. This integration offers the potential to reduce both the power and the number of stages required to obtain the specified compression. However, the complex flow behavior within two-phase water ejectors, especially under high-pressure, high-temperature conditions, remains insufficiently explored in the literature. This study addresses this gap by conducting a detailed numerical investigation of two-phase flow and shock wave behavior using the compressible two-phase mixture approach in computational fluid dynamics (CFD) commercial solver Ansys Fluent. The ejector geometry and critical operating points were derived from a prior study using one-dimensional (1D) analysis, which provided the design and operational conditions used in the current simulations. The ejector was modeled in two-dimensional (2D) axisymmetric configurations. The Lee model, in conjunction with the water saturation curve, was applied to capture non-equilibrium mass transfer processes, including evaporation and condensation. During the simulations, the presence of a liquid-vapor mixture may cause the speed of sound to drop, making the flow locally supersonic. Initial simulations revealed a series of shock waves in the mixing section, which elevated the mixture flow pressure to the designated set back-pressure value, thereby achieving an ejector pressure ratio of approximately 1.3. These findings provide crucial insights into how thermodynamic conditions influence two-phase flow behavior, particularly in the generation and intensity of shock waves. This work advances the modeling procedures for two-phase ejectors and enhances the understanding of the physical phenomena occurring within two-phase water ejectors designed for HTHP applications. KW - Two-phase ejector KW - High-temperature heat pump KW - Multiphase CFD simulation KW - Steam compression Y1 - 2025 SN - 978-0-7918-8880-3 U6 - https://doi.org/10.1115/GT2025-151706 PB - American Society of Mechanical Engineers CY - New York, NY ER - TY - GEN A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Numerical prediction of pressure drop and particle separation efficiency of some vane-type dust filters T2 - Powder Technology Y1 - 2013 U6 - https://doi.org/10.1016/j.powtec.2013.04.050 SN - 0032-5910 VL - 245 SP - 265 EP - 272 ER - TY - GEN A1 - Zaussinger, Florian A1 - Kupka, Friedrich A1 - Montgomery, M. A1 - Egbers, Christoph T1 - Numerical simulation of DA white dwarf surface convection T2 - Journal of physics / Conference Series Y1 - 2018 U6 - https://doi.org/10.1088/1742-6596/1031/1/012013 SN - 1742-6596 SN - 1742-6588 VL - 1031 IS - 1 ER - TY - CHAP A1 - Brasch, W. A1 - Sitte, B. A1 - Egbers, Christoph T1 - Numerical simulation of thermal convection in spherical shellsPreparation of Space experiments Y1 - 2001 ER - TY - CHAP A1 - Futterer, Birgit A1 - Gellert, Marcus A1 - Travnikov, Vadim T1 - Numerical Studies for GeoFlow: Dynamics of Thermal Convection in Rotating Spherical Shells Y1 - 2007 ER - TY - JOUR A1 - Stücke, Peter A1 - Scurtu, Nicoleta A1 - Egbers, Christoph T1 - Numerische Untersuchung der Srömung in Gleitlagern Y1 - 2005 UR - http://www3.interscience.wiley.com/cgi-bin/jhome/91016652 ER - TY - THES A1 - Junk, Markus T1 - Numerische Untersuchung der Stabilität der Strömung im weiten Kugelspalt Y1 - 2004 SN - 3-86537-345-3 PB - Cuvillier Verlag CY - Göttngen ER - TY - JOUR A1 - Brasch, W. A1 - Sitte, B. A1 - Egbers, Christoph T1 - Numerische Untersuchung der thermischen Konvektion in einer weiten Kugelschale Y1 - 2001 ER - TY - CHAP A1 - Egbers, Christoph T1 - Observation of Nanoparticle Aggregation in a tube flow under microgravity conditions T2 - 34th COSPAR Scientific Assembly, The Second World Space Congress, held 10-19 October, 2002 in Houston, TX, USA., meeting abstract Y1 - 2002 UR - http://adsabs.harvard.edu/abs/2002cosp...34E3464E ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - König, Franziska A1 - Al-Mutairi, Fahad M. A1 - Egbers, Christoph A1 - Öngüner, Emir T1 - On the Application of Hot Wires and Pitot Tubes in Pipe and Channel Flows T2 - HEFAT 2014, 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 6 – 9 July 2014 Orlando, Florida Y1 - 2014 U6 - https://doi.org/10.13140/2.1.3766.7521 ER - TY - GEN A1 - König, Franziska A1 - Zanoun, El-Sayed A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - On the behavior of the inner peak in turbulent pipe flow Y1 - 2013 UR - http://etc14.ens-lyon.fr/openconf/modules/request.php?module=oc_proceedings&action=view.php&a=Poster&id=574 N1 - 14th European Turbulence Conference, 1– 4 September 2013, Lyon, France ER - TY - GEN A1 - Meletti, Gabriel A1 - Abide, Stéphane A1 - Harlander, Uwe A1 - Raspo, Isabelle A1 - Stéphane Viazzo, Stéphane T1 - On the influence of the heat transfer at the free surface of a thermally driven rotating annulus T2 - Physics of fluids N2 - Experiments on rotating annuli that are differentially heated in the radial direction have largely contributed to a better understanding of baroclinic instabilities. This configuration creates waves at a laboratory scale that are related to atmospheric circulations. Pioneer studies in baroclinic tanks have shown that experiments with low aspect ratios are more suitable to reproduce small-scale inertia gravity waves, but these tanks have a larger free surface, which leads to higher interactions with their surrounding environment. Considering the heat transferred through the free surface, the present work investigates its impacts on the baroclinic instability using direct numerical simulations (DNS). Y1 - 2025 U6 - https://doi.org/10.1063/5.0248712 SN - 1089-7666 VL - 37 SP - 1 EP - 16 PB - AIP Publishing CY - College Park, MD ER - TY - CHAP A1 - Bonczek, P. A1 - Egbers, Christoph T1 - On the influence of thermal convection in classical Taylor-Couette flows Y1 - 2004 ER - TY - CHAP A1 - Maltese Meletti de Oliveira, Gabriel A1 - Raspo, Isabelle A1 - Seelig, Torsten A1 - Viazzo, Stephane A1 - Randriamampianina, Anthony A1 - Abide, Stéphane A1 - Krebs, Andreas A1 - Harlander, Uwe T1 - On the instability of radially sheared and axially stratified vortex flow T2 - European Geosciences Union, General Assembly 2018, Vienna, Austria Y1 - 2018 UR - https://meetingorganizer.copernicus.org/EGU2018/EGU2018-8703.pdf N1 - EGU2018-8703 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Larcher, Thomas von A1 - Futterer, Birgit A1 - Egbers, Christoph T1 - On the status of experimental preparation of spherical gap flow experiments with central force field on International Space Station (ISS) Y1 - 2007 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Öngüner, Emir A1 - Egbers, Christoph A1 - Bellani, Gabriele A1 - Talamelli, Alessandro T1 - One-Dimensional Flow Spectra and Cumulative Energy from Two Pipe Facilities T2 - iTi 2018 Conference on Turbulence VIII, September 5–7, 2018, Bertinoro, Italy, Book of abstract Y1 - 2018 UR - https://www.fdy.tu-darmstadt.de/iti/author_information/submit_abstract_1/abstract_submission_1.en.jsp SP - S. 100 ER - TY - CHAP A1 - Seelig, Torsten A1 - Jongmanns, Marcel A1 - Meyer, Antoine A1 - Meier, Martin A1 - Egbers, Christoph T1 - Onset of dielectrophoretic force-driven convection in annular geometry under Earth's gravity T2 - 20th International Couette-Taylor Workshop, 11-13 July 2018, Marseille, France, Book of abstracts Y1 - 2018 UR - https://ictw20.sciencesconf.org/data/pages/PROGRAM_ICTW20.pdf ER - TY - JOUR A1 - Brucks, A. A1 - Sitte, B. A1 - Egbers, Christoph T1 - Onset of thermal convection and influence of rotation in wide spherical gaps Y1 - 2001 ER - TY - CHAP A1 - Merbold, Sebastian A1 - Brauckmann, Hannes A1 - Egbers, Christoph T1 - Optimal angular momentum flux of wide gap Taylor-Couette flow T2 - Book of abstracts, 9th European Fluid Mechanics Conference (EFMC), 9-13 September, Rome, Italy Y1 - 2012 UR - http://www.efmc9.eu/absbook/index.html ER - TY - CHAP A1 - Harlander, Uwe A1 - Larcher, Thomas von A1 - Wright, G. B. A1 - Hoff, Michael A1 - Alexandrov, Kiril A1 - Egbers, Christoph ED - Larcher, Thomas von ED - Williams, Paul D. T1 - Orthogonal decomposition methods to analyze PIV, LDV and thermography data of a thermally driven rotating annulus laboratory experiment T2 - Modeling Atmospheric and Oceanic Flows: Insights from Laboratory Experiments and Numerical Simulations Y1 - 2014 SN - 978-1-118-85593-5 SN - 978-1-118-85590-4 U6 - https://doi.org/10.1002/9781118856024 SP - 315 EP - 336 PB - Wiley CY - Hoboken ER - TY - GEN A1 - Dahley, Norman A1 - Futterer, Birgit A1 - Egbers, Christoph A1 - Crumeyrolle, Olivier A1 - Mutabazi, Innocent T1 - Parabolic flight experiment "Convection in a Cylinder" : Convection patterns in varying buoyancy forces T2 - Journal of Physics: Conference Series Y1 - 2011 U6 - https://doi.org/10.1088/1742-6596/318/8/082003 SN - 1742-6588 N1 - 13th European Turbulence Conference, 12-15 September 2011, Warsaw, Poland VL - 318 SP - 082003 ER - TY - THES A1 - Shen, Jianqi T1 - Particle Size Analysis by Transmission Fluctuation Spectrometry: Fundamentals and Case Studies Y1 - 2003 SN - 3-89873-946-5 N1 - Gutachrer: Prof. Egbers PB - Cuvillier Verlag CY - Göttingen ER - TY - CHAP A1 - Deters, T. A1 - Gliemann, S. A1 - Egbers, Christoph T1 - Particle-Image-Velocimetry unter Einsatz von thermochromen Flüssigkristallen Y1 - 2005 ER - TY - CHAP A1 - Ristau, R. A1 - Meier, M. A1 - Egbers, Christoph A1 - Schmidt, J.-R. A1 - Poppe, T. T1 - Partikelbeladene Strömungen : Simulation und Messtechnik Y1 - 2001 ER - TY - JOUR A1 - Futterer, Birgit A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - Periodical convective flow in spherical shells Y1 - 2004 ER - TY - GEN A1 - Kühne, Simon A1 - Sliavin, Yaraslau A1 - Szabo, Peter A1 - Carter, Richard A1 - Krebs, Andreas A1 - Egbers, Christoph T1 - Phase-demodulation of interferograms of thermo-electrohydrodynamic convection in a differentially heated cylindrical annulus T2 - Experimentelle Strömungsmechanik : 31. Fachtagung, 3.-5. September 2024, Berlin / Herausgeber: C. Rauh, B. Ruck, A. Leder Y1 - 2024 UR - https://www.researchgate.net/publication/384772995_Phase-demodulation_of_interferograms_of_thermo-electrohydrodynamic_convection_in_a_differentially_heated_cylindrical_annulus SN - 978-3-9816764-4-0 SP - 7.1. EP - 7.8 PB - German Association for Laser Anemometry 26.8 GALA e.V. CY - Karlsruhe ER - TY - CHAP A1 - Merbold, Sebastian A1 - Harlander, Uwe A1 - Egbers, Christoph T1 - Physics of rotating fluids, a DFG core facility centre T2 - 88th Annual Meeting of the International Association of Applied Mathematics and Mechanics GAMM, March 6-10, 2017, Weimar, Germany, Book of abstracts Y1 - 2017 UR - https://www.tu-ilmenau.de/fileadmin/media/analysis/trunk/170304_BoA_GAMM_2017.pdf SP - S. 355 ER - TY - GEN A1 - Richter, Stefan A1 - Zanoun, El-Sayed A1 - Peixinho, Jorge A1 - Egbers, Christoph T1 - Pipe Flow Development and Transition in CoSmaPipe Facility T2 - Proceedings in applied mathematics and mechanics : PAMM Y1 - 2023 U6 - https://doi.org/10.1002/pamm.202300001 SN - 1617-7061 N1 - 92nd Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) May 2023 VL - 23 IS - 1 ER - TY - GEN A1 - Szabo, Peter A1 - Meier, Martin A1 - Meyer, Antoine A1 - Barry, Elhadj A1 - Motuz, Vasyl A1 - Mutabazi, Innocent A1 - Egbers, Christoph T1 - PIV and shadowgraph measurements of thermo-electrohydrodynamic convection in a horizontal aligned differentially heated annulus at different gravity conditions T2 - Experimental Thermal and Fluid Science Y1 - 2021 UR - https://www.sciencedirect.com/science/article/pii/S0894177721001175?via%3Dihub U6 - https://doi.org/10.1016/j.expthermflusci.2021.110470 SN - 1879-2286 VL - 129 ER - TY - CHAP A1 - Seelig, Torsten A1 - Burchardt, Martin A1 - Krebs, Andreas A1 - Harlander, Uwe A1 - Egbers, Christoph T1 - PIV measurements in an axially stratified Taylor-Couette experiment T2 - Book of abstracts, School ISTROF 2016, Instabilities and Turbulence in Strato-Rotational Flows, July 11-13th, 2016, Le Havre Y1 - 2016 UR - https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxzY2hvb2xpc3Ryb2Z8Z3g6NDA3Y2E3ZGQ2OWIwMTdmNQ ER - TY - CHAP A1 - Smieszek, Marlene A1 - Abcha, N. A1 - Mutabazi, Innocent A1 - Egbers, Christoph T1 - PIV measurements in viscoelastic polyacrylamide solution in Taylor-Couette system Y1 - 2007 ER - TY - CHAP A1 - Froitzheim, Andreas A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - PIV Messungen in einer Taylor-Couette Strömung mit weitem Spalt T2 - Lasermethoden in der Strömungsmesstechnik, 23. Fachtagung, 8. - 10. September 2015, Dresden Y1 - 2015 SN - 978-3-9816764-1-9 SP - S. 27 PB - GALA CY - Karlsruhe ER - TY - GEN A1 - Harlander, Uwe A1 - Larcher, Thomas von A1 - Wang, Yongtai A1 - Egbers, Christoph T1 - PIV- and LDV-measurements of baroclinic wave interactions in a thermally driven rotating annulus Y1 - 2011 U6 - https://doi.org/10.1007/s00348-009-0792-5 ER - TY - GEN A1 - Harlander, Uwe A1 - Borcia, Ion-Dan A1 - Vincze, Miklos A1 - Rodda, Costanza T1 - Probability Distribution of Extreme Events in a Baroclinic Wave Laboratory Experiment T2 - Fluids N2 - Atmospheric westerly jet streams are driven by temperature differences between low and high latitudes and the rotation of the Earth. Meandering jet streams and propagating Rossby waves are responsible for the variable weather in the mid-latitudes. Moreover, extreme weather events such as heat waves and cold spells are part of the jet stream dynamics. For many years, a simple analog in the form of a simplified laboratory experiment, the differentially heated rotating annulus, has provided insight into the dynamics of the meandering jet stream. In the present study, probability density distributions of extreme events from a long-term laboratory experiment are studied and compared to the atmospheric probability density distributions. Empirical distributions of extreme value monthly block data are derived for the experimental and atmospheric cases. Generalized extreme value distributions are adjusted to the empirical distributions, and the distribution parameters are compared. Good agreement was found, but the distributions of the experimental data showed a shift toward larger extreme values, and some explanations for this shift are suggested. The results indicate that the laboratory model might be a useful tool for investigating changes in extreme event distributions due to climate change. In the laboratory context, the change can be modeled by an increase in total temperature accompanied by a reduction in the radial heat contrast. Y1 - 2022 U6 - https://doi.org/10.3390/fluids7080274 SN - 2311-5521 VL - 7 IS - 8 ER - TY - GEN A1 - Bouras, Dikra A1 - Fellah, Mamoun A1 - Barille, Regis A1 - Obrosov, Aleksei A1 - El-Hiti, Gamal A. T1 - Production of novel Zr–Mg nanoceramics based on kaolinite clay with strong antibacterial activity T2 - Ceramics International N2 - Gram-negative bacteria Pseudomonas putida, Gram-positive Bacillus subtilis, and Staphylococcus aureus were utilized as test samples to evaluate the antibacterial characteristics of DD3-clay/MgO and DD3+38 wt% ZrO2-clay/MgO nanoparticles. The ceramic powders prepared by a thermal autoclave method are characterized before and after Mg addition by SEM, EDX, XRD, IR, UV–visible, and TEM in order to investigate microstructure, phase, and surface morphology. The results showed that after adding Mg, it led to the deformation of the crystal lattices of (mullite, zirconium silicate, and zirconium oxide) together with a decrease in particle size (75–103 nm) and a complete change in its shape from nanotube to nanospherical, as observed by SEM and TEM analyses. It also confirmed by UV–visible spectroscopy that the addition of Mg increases the absorbance accompanying a decrease in the energy gap of 1.91, 1.74, 1.73, and 1.43 eV corresponding to DD3, DD3Z, DD3/30 wt% Mg and DD3Z/30 wt% Mg respectively. The antibacterial mechanism is related to the size of the particles, the solvent used for powder dissolution, the nanoparticle's size when they come into touch with bacteria, and the generation of reactive oxygen species (ROS: ˙O2−, ˙OH, and H2O2). It was observed that the anti-bacterial activity is enhanced with 10 wt% and 30 wt% of Mg added to a modified ceramic powder. Also, more O2− is formed on the surface of the prepared powder, which penetrates the bacterial cell and destroys it. The nanocomposite particles showed remarkable antibacterial activity when they were dissolved in DMSO compared to methanol and chloroform as organic solvents. The aim is to enrich knowledge on the antibacterial activities of metal nanoparticles (ZrSiO4 and MgO) on three bacterial strains with different Grams due to their extensive involvement in the phenomena of contamination and infection encountered in the medical field. The synthesized nanoparticles have good antimicrobial activity against all strains tested. A maximum inhibition zone of 35 ± 0.2 mm was obtained with S. aureus, a zone of 23 ± 0.46 mm with P. putida and a zone of 27 ± 0.46 nm with B. subtilis for DD3/30 wt% Mg and an inhibition zone of 38 ± 0.93 mm, 26 ± 0.24 nm and 17 ± 0.33 nm was obtained with same strains for DD3Z/30 wt% Mg, respectively. KW - DD3 + 38 wt% ZrO2/Mg KW - Nanoparticles KW - Synthesis KW - Antibacterial activity KW - Transmission electron microscope KW - Nanomaterial Y1 - 2024 U6 - https://doi.org/https://doi.org/10.1016/j.ceramint.2024.05.091 SN - 1873-3956 VL - 50 IS - 16 SP - 27949 EP - 27960 PB - Elsevier ER - TY - GEN A1 - Scurtu, Nicoleta A1 - Futterer, Birgit A1 - Egbers, Christoph T1 - Pulsating and traveling wave modes of natural convection in spherical shells Y1 - 2010 ER - TY - GEN A1 - Panahandeh, Sara A1 - May, Daniel A1 - Grosse-Kockert, Corina A1 - Schacht, Ralph A1 - Abo Ras, Mohamad A1 - Wunderle, Bernhard T1 - Pulsed infrared thermal imaging as inline quality assessment tool T2 - Microelectronics Reliability N2 - Pulsed infrared thermography (PIRT) is a very fast and non-destructive technique for testing various types of specimens. This makes PIRT interesting for 100 %-inspections in industrial production lines. Especially for the die attach interface inspection of sintered and soldered electronic components and layer-to-layer interfaces in fiber-reinforced plastic (FRP), the industry is looking for alternatives to cost intensive X-ray methods and the time-consuming scanning acoustic microscopy (C-SAM). A big challenge to use the PIRT technology for inspections in industrial production lines is the low emissivity of the surface of the device under test (DUT). This work will present a PIRT system including a vacuum foil lamination setup to avoid the necessary spray coating of DUTs with low emissivity surfaces in failure analyses. This system can be used as inline quality assessment tool with an integrated technique to perform reliable component inspections on a wide range of different specimens. KW - Pulsed infrared thermography; Non-destructive technique; Sintered and soldered electronic components; Production line; Failure analysis Y1 - 2023 U6 - https://doi.org/10.1016/j.microrel.2023.114910 SN - 0026-2714 VL - 2023 IS - Volume 142 SP - 1 EP - 11 ER - TY - GEN A1 - Kriese, Maximilian A1 - Lockan, Michael A1 - Schaffrath, Robert A1 - Stathopoulos, Panagiotis T1 - Quasi-static simulation of a start-up procedure for a multistage centrifugal compression system T2 - Proceedings of ASME Turbo Expo 2025 : Turbomachinery Technical Conference and Exposition, June 16-20, 2025, Memphis, Tennessee : Volume 4 : Controls, Diagnostics & Instrumentation; Cycle Innovations; Education; Electric Power N2 - In order to achieve the European Union’s climate protection targets by 2050, energy use in the private and industrial sectors must be switched from using fossil fuels to renewable energy. For industry, this might require that the production processes itself needed to be changed or new technologies to manufacture in a sustainable way needed to be introduced. One example of the latter mentioned are high-temperature heat pumps (HTHP), which will be capable to generate sustainable process heat up to 300°C e.g. for the pulp and paper or food industry. There are currently only a few HTHPs commercially available that can reach temperatures above 150°C. In order to overcome the technological challenges to reach 300°C, two HTHP prototypes are currently developed at the Institute of Low-Carbon Industrial Processes of the German Aerospace Centre (DLR). One of them is the pilot plant ZiRa which is based on the reversed Rankine process and uses steam as its working medium. Herein three centrifugal compressors are applied to achieve a saturated steam temperature of 200°C at the sink. The safe speed-up of these three compressors, titled as the start-up procedure, from the standstill of each compressors up to their respective nominal speed, is modelled in the flow chart software EBSILON Professional. In addition to the compressors, all necessary components, i.e. the intercoolers, the fittings and valves, the pipes, the separators and the bypasses are modelled so that all parameters influencing the thermodynamic inlet state of the respective compressor are considered. The start-up of the multi-stage compression system of the pilot plan ZiRa is shown as a quasi-static time series. As a first step, the speed increments are defined. Afterwards, absolute pressures between 1.25 and 2 bar upstream of the first compressor and their effect on the operation of the subsequent compressor stages, are analyzed. Therefore, the mass flow rates and rotational speeds are specified manually at first so that an executable, editable model is created. Based on these results, the operation of the compressors are optimized in order to ensure a surge margin of 15 % and to avoid choke in each operating point. KW - High temperature heat pump KW - Compressor startup KW - Reverse Rankine cycle KW - Process simulation Y1 - 2025 SN - 978-0-7918-8880-3 U6 - https://doi.org/10.1115/GT2025-151935 PB - American Society of Mechanical Engineers CY - New York, NY ER - TY - CHAP A1 - Futterer, Birgit A1 - Egbers, Christoph ED - Eckhardt, Bruno T1 - Quasi-stationary and chaotic convection in low rotating spherical shells T2 - Advances in turbulence XII, proceedings of the 12th EUROMECH European Turbulence Conference, September, 2009, Marburg, Germany Y1 - 2009 SN - 978-3-642-03084-0 SP - 97 EP - 101 PB - Springer CY - Berlin [u.a.] ER - TY - CHAP A1 - Sitte, B. A1 - Immohr, J. A1 - Hinrichs, O. A1 - Meier, R. A1 - Egbers, Christoph A1 - Rath, H. J. T1 - Rayleigh-Benard convection in dielectrophoretic force fields Y1 - 2001 ER - TY - GEN A1 - Grimm-Strele, Hannes A1 - Kupka, Friedrich A1 - Löw-Baselli, Bernhard A1 - Mundprecht, Eva A1 - Zaussinger, Florian A1 - Schiansky, Peter T1 - Realistic simulations of stellar surface convection with ANTARES: I. Boundary conditions and model relaxation T2 - New Astronomy Y1 - 2015 UR - http://www.sciencedirect.com/science/article/pii/S1384107613001383 U6 - https://doi.org/10.1016/j.newast.2013.11.005 SN - 1384-1076 VL - 34 SP - 278 EP - 293 ER - TY - CHAP A1 - Harlander, Uwe A1 - Wright, G. B. A1 - Egbers, Christoph T1 - Reconstruction of the 3D flow field in a differentially heated rotating annulus by synchronized particle image velocimetry and infrared thermography measurements T2 - 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, 09-12 July, Proceedings, Calouste Gulbenkian Foundation, Lisbon, Portugal Y1 - 2012 UR - http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2012/program.asp ER - TY - CHAP A1 - Harlander, Uwe A1 - Wright, G. B. A1 - Egbers, Christoph T1 - Reconstruction of the 3D flow field in a differentially heated rotating annulus laboratory experiment T2 - European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April Y1 - 2012 UR - http://meetingorganizer.copernicus.org/EGU2012/EGU2012-5368.pdf N1 - EGU2012-5368 ER - TY - CHAP A1 - Jehring, Lothar A1 - Zanoun, El-Sayed T1 - Reducing environmental impact by mean of active flow control Y1 - 2005 ER - TY - CHAP A1 - Merbold, Sebastian A1 - Hasanuzzaman, Gazi A1 - Buchwald, Tom A1 - Schunk, Christoph A1 - Schmeling, Daniel A1 - Volkmann, André A1 - Brinkema, Robert A1 - Hampel, Uwe A1 - Schröder, Andreas A1 - Egbers, Christoph ED - Cierpka, Christian T1 - Reference experiment for aerosol particle transport for dynamic situations T2 - Experimentelle Strömungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau T2 - Referenzexperiment zum Aerosolpartikel-Transport für dynamische Situationen Y1 - 2022 UR - https://www.gala-ev.org/images/Beitraege/Beitraege2022/pdf/09.pdf SN - 978-3-9816764-8-8 PB - Deutsche Gesellschaft für Laser-Anemometrie - German Association for Laser Anemometry GALA e.V. CY - Karlsruhe ER - TY - GEN A1 - Merbold, Sebastian A1 - Hasanuzzaman, Gazi A1 - Buchwald, Tom A1 - Schunk, Christoph A1 - Schmeling, Daniel A1 - Volkmann, André A1 - Brinkema, Robert A1 - Hampel, Uwe A1 - Schröder, Andreas A1 - Egbers, Christoph T1 - Reference experiment on aerosol particle transport for dynamic situations T2 - tm - Technisches Messen Y1 - 2023 U6 - https://doi.org/10.1515/teme-2022-0118 SN - 2196-7113 VL - 90 IS - 5 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Nagib, H. M. T1 - Refined Cf relation for turbulent channels and consequences for high Re experiments Y1 - 2009 ER - TY - GEN A1 - Schön, F.-T. A1 - Borcia, I. D. A1 - Harlander, U. A1 - Borcia, R. A1 - Richter, S. A1 - Bestehorn, M. T1 - Resonant surface waves in an oscillating periodic tank with a submerged hill T2 - Journal of Fluid Mechanics Y1 - 2024 U6 - https://doi.org/10.1017/jfm.2024.885 VL - 999 (2024) SP - 1 EP - 18 ER - TY - GEN A1 - Harlander, U. A1 - Schön, F.-T. A1 - Borcia, I. D. A1 - Richter, S. A1 - Borcia, R. A1 - Bestehorn, M. T1 - Resonant water-waves in ducts with different geometries: forced KdV solutions T2 - European Journal of Mechanics - B/Fluids Y1 - 2024 U6 - https://doi.org/10.1016/j.euromechflu.2024.03.008 SN - 0997-7546 VL - 106 IS - July–August 2024 SP - 107 EP - 115 ER - TY - JOUR A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Nagib, H. M. T1 - Response to "Comment on 'Evaluating the law of the wall in two-dimensional fully developed turbulent channel flows' " Y1 - 2004 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Dewidar, Yasser A1 - Egbers, Christoph T1 - Reynolds number dependence of azimuthal and streamwise pipe flow structures T2 - Journal of Fluid Mechanics Y1 - 2023 U6 - https://doi.org/10.1017/jfm.2023.700 SN - 0022-1120 VL - Vol. 973 SP - 1 EP - 36 ER - TY - GEN A1 - Harlander, Uwe A1 - Wenzel, Julia A1 - Egbers, Christoph T1 - Rotating annulus laboratory experiments with application to baroclinic channel flows with narrows Y1 - 2010 ER - TY - GEN A1 - Zaussinger, Florian A1 - Haun, Peter A1 - Szabo, Peter A1 - Travnikov, Vadim A1 - Al-Kawwas, Mustafa A1 - Egbers, Christoph T1 - Rotating spherical gap convection in the GeoFlow International Space Station (ISS) experiment T2 - Physical Review Fluids Y1 - 2020 U6 - https://doi.org/10.1103/PhysRevFluids.5.063502 SN - 2469-990X VL - 5 IS - 6 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Nagib, H. M. T1 - Scaling Laws for Turbulent Channel and Pipe Flows over a Wide Range of Reynolds Number Y1 - 2005 ER - TY - CHAP A1 - Augenstein, Edgar A1 - Leopold, F. A1 - Richard, H. T1 - Schlieren Techniques in Comparison The Background Oriented Method versus Visualization with Holographic Filters Y1 - 2001 ER - TY - GEN A1 - Kupka, Friedrich A1 - Losch, Martin A1 - Zaussinger, Florian A1 - Zweigle, Thomas T1 - Semi-convection in the ocean and in stars: A multi-scale analysis T2 - Meteorologische zeitschrift N2 - Fluid stratified by gravitation can be subject to a number of instabilities which eventually lead to a flow that causes enhanced mixing and transport of heat. The special case where a destabilizing temperature gradient counteracts the action of a stabilizing gradient in molecular weight is of interest to astrophysics (inside stars and giant planets) and geophysics (lakes, oceans) as well as to some engineering applications. The detailed dynamics of such a system depend on the molecular diffusivities of heat, momentum, and solute as well as system parameters including the ratio of the two gradients to each other. Further important properties are the formation and merging of well-defined layers in the fluid which cannot be derived from linear stability analysis. Moreover, the physical processes operate on a vast range of length and time scales. This has made the case of semi-convection, where a mean temperature gradient destabilizes the stratification while at the same time the mean molecular gradient tends to stabilize it, a challenge to physical modelling and to numerical hydrodynamical simulation. During the MetStröm project the simulation codes ANTARES and MITgcm have been extended such that they can be used for the simulations of such flows. We present a comparison of effective diffusivities derived from direct numerical simulations. For both stars and the oceanic regimes, the Nusselt numbers (scaled diffusivities) follow similar relationships. Semi-convection quickly becomes inefficient, because the formation of layers limits vertical mixing. In contrast to the complementary saltfingering, these layers tend to damp instabilities so that effective diffusivities of salinity (concentration) are up to two orders of magnitudes smaller than in the former case. KW - hydrodynamics KW - numerical simulation KW - turbulence Y1 - 2015 UR - https://www.schweizerbart.de/papers/metz/detail/24/84729/Semi_convection_in_the_ocean_and_in_stars_A_multi_scale_analysis?l=DE U6 - https://doi.org/10.1127/metz/2015/0643 SN - 0941-2948 VL - 24 IS - 3 SP - 343 EP - 358 ER - TY - GEN A1 - Zaussinger, Florian A1 - Kupka, Friedrich A1 - Egbers, Christoph A1 - Neben, Matthias A1 - Hücker, S. A1 - Bahr, C. A1 - Schmitt, M. T1 - Semi-convective layer formation T2 - Journal of Physics: Conference Series Y1 - 2017 U6 - https://doi.org/10.1088/1742-6596/837/1/012012 VL - 837 IS - 1 ER - TY - GEN A1 - Zaussinger, Florian T1 - Semiconvection Y1 - 2011 N1 - Poster ER - TY - GEN A1 - Zaussinger, Florian T1 - Semiconvection Y1 - 2011 ER - TY - GEN A1 - Futterer, Birgit A1 - Krebs, Andreas A1 - Plesa, Ana-Catalina A1 - Zaussinger, Florian A1 - Hollerbach, Rainer A1 - Breuer, Doris A1 - Egbers, Christoph T1 - Sheet-like and plume-like thermal flow in a spherical convection experiment performed under microgravity T2 - Journal of Fluid Mechanics Y1 - 2013 U6 - https://doi.org/10.1017/jfm.2013.507 SN - 1750-6859 VL - vol. 735 SP - 647 EP - 683 ER - TY - CHAP A1 - Egbers, Christoph A1 - Zaussinger, Florian T1 - Simulation of geophysical fluid flows in spherical shells: The Geoflow experiments on ISS T2 - Book of abstracts, School ISTROF 2016, Instabilities and Turbulence in Strato-Rotational Flows, July 11-13th, 2016, Le Havre Y1 - 2016 UR - https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxzY2hvb2xpc3Ryb2Z8Z3g6NDA3Y2E3ZGQ2OWIwMTdmNQ ER - TY - CHAP A1 - Egbers, Christoph A1 - Hollerbach, Rainer A1 - Chossat, P. T1 - Simulation of geophysical fluid flows under microgravity Y1 - 2001 ER - TY - CHAP A1 - Egbers, Christoph T1 - Simulation of Geophysical Fluid Flows under Microgravity (GeoFlow): Flow diagnostics and experiment concept for Fluid Science experiments T2 - Proceedings of 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, 8-11th July 2002 Y1 - 2002 UR - http://in3.dem.ist.utl.pt/lxlaser2002/papers/paper_28_2.pdf ER - TY - GEN A1 - Simon, Kühne A1 - Yaraslau, Sliavin A1 - Szabo, Peter A1 - Carter, R. A1 - Krebs, Andreas A1 - Egbers, Christoph T1 - Simultaneous particle image velocimetry and background oriented schlieren measurements of convective flows T2 - Experimentelle Strömungsmechanik, Hrsg.: B. Ruck et al. Y1 - 2024 UR - https://www.researchgate.net/publication/384774435_Simultaneous_Particle_Image_Velocimetry_and_Background_Oriented_Schlieren_measurements_of_convective_flows SN - 978-3-9816764-4-0 PB - German Association for Laser Anemometry 26.8 GALA e.V. CY - Karlsruhe ER - TY - GEN A1 - Szabo, Peter A1 - Meyer, Antoine A1 - Meier, Martin A1 - Motuz, Vasyl A1 - Sliavin, Yaraslau A1 - Egbers, Christoph T1 - Simultaneous PIV and shadowgraph measurements of thermo-electrohydrodynamic convection in a differentially heated annulus T2 - Technisches Messen Y1 - 2022 U6 - https://doi.org/10.1515/teme-2021-0120 SN - 2196-7113 VL - 89 IS - 3 SP - 148 EP - 157 ER - TY - GEN A1 - Harlander, Uwe A1 - Wenzel, Julia A1 - Wang, Yongtai A1 - Alexandrov, Kiril A1 - Egbers, Christoph T1 - Simultaneous PIV- and thermography-measurements of partially blocked flow in a heated rotating annulus Y1 - 2011 ER -