TY - CHAP A1 - Meyer, Antoine A1 - Yoshikawa, Harunori A1 - Mutabazi, Innocent A1 - Egbers, Christoph T1 - Effect of the dielectrophoretic force in a rigidly rotating cylindrical annulus T2 - 20th International Couette-Taylor Workshop, 11-13 July 2018, Marseille, France, Book of abtracts Y1 - 2018 UR - https://ictw20.sciencesconf.org/data/pages/PROGRAM_ICTW20.pdf ER - TY - GEN A1 - Meyer, Antoine A1 - Meier, Martin A1 - Jongmanns, Marcel A1 - Seelig, Torsten A1 - Egbers, Christoph A1 - Mutabazi, Innocent T1 - Effect of the Initial Conditions on the Growth of Thermoelectric Instabilities During Parabolic T2 - Microgravity Science and Technology Y1 - 2019 UR - https://link.springer.com/article/10.1007/s12217-019-09755-1 U6 - https://doi.org/10.1007/s12217-019-09755-1 SN - 1875-0494 SN - 0938-0108 VL - 31 IS - 5 SP - 715 EP - 721 ER - TY - GEN A1 - Nobis, Matthias A1 - Reinke, Peter A1 - Schmidt, Marcus A1 - Egbers, Christoph ED - Egbers, Christoph T1 - Einfluss der Wellenverlagerung auf das Strömungsfeld im Schmierspalt eines Gleitlagermodells T2 - Experimentelle Strömungsmechanik, 24. Fachtagung 6.-8. September 2016 Cottbus Y1 - 2016 SN - 978-3-9816764-2-6 SP - S. 29 PB - German Association for Laser Anemometry GALA e.V. CY - Karlsruhe ER - TY - CHAP A1 - Harlander, Uwe A1 - Hoff, Michael A1 - Seelig, Torsten A1 - Egbers, Christoph T1 - Empirical singular vectors of baroclinic flows deduced from experimental data T2 - European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 – 12 April 2013 Y1 - 2013 UR - http://meetingorganizer.copernicus.org/EGU2013/EGU2013-5330.pdf N1 - EGU2013-5330 ER - TY - GEN A1 - Hoff, Michael A1 - Harlander, Uwe A1 - Egbers, Christoph T1 - Empirical singular vectors of baroclinic flows deduced from experimental data of a differentially heated rotating annulus T2 - Meteorologische Zeitschrift Y1 - 2015 U6 - https://doi.org/10.1127/metz/2014/0563 VL - 23 IS - 6 SP - 581 EP - 597 ER - TY - CHAP A1 - Meier, Martin A1 - Egbers, Christoph A1 - Mutabazi, Innocent A1 - Meyer, Antoine A1 - Seelig, Torsten A1 - Jongmanns, Marcel T1 - Enhanced Heat transfer in a cylindrical annulus under 1g and low-g conditions T2 - 69th International Astronautical Congress, 1 - 5 October 2018, Bremen, Germany Y1 - 2018 UR - https://iafastro.directory/iac/paper/id/42955/abstract-pdf/IAC-18,A2,4,8,x42955.brief.pdf?2018-03-29.10:42:29 ER - TY - GEN A1 - Hasanuzzaman, Gazi A1 - Merbold, Sebastian A1 - Motuz, Vasyl A1 - Egbers, Christoph T1 - Enhanced outer peaks in turbulent boundary layer using uniform blowing at moderate Reynolds number T2 - Journal of Turbulence Y1 - 2022 U6 - https://doi.org/10.1080/14685248.2021.2014058 SN - 1468-5248 VL - 23 IS - 1-2 SP - 68 EP - 95 ER - TY - GEN A1 - Hasanuzzaman, Gazi A1 - Eivazi, Hamidreza A1 - Merbold, Sebastian A1 - Egbers, Christoph A1 - Vinuesa, Ricardo T1 - Enhancement of PIV measurements via physics-informed neural networks T2 - Measurement Science and Technology Y1 - 2022 UR - https://iopscience.iop.org/article/10.1088/1361-6501/aca9eb U6 - https://doi.org/10.1088/1361-6501/aca9eb SN - 1361-6501 ER - TY - CHAP A1 - Hickel, Stefan A1 - Augenstein, Edgar A1 - Egbers, Christoph ED - Dopheide, Dietrich ED - Müller, Harald ED - Strunck, Volker ED - Ruck, Bodo ED - Leder, Alfred T1 - Entwicklung einer Echt-Dreidimensionalen Particle Image Velocimetry T2 - Lasermethoden in der Strömungsmesstechnik, 11. Fachtagung, 9. bis 11. September 2003 in Braunschweig Y1 - 2003 SN - 3-00-011903-5 SP - 39.1 EP - 39.6 PB - PTB CY - Braunschweig ER - TY - CHAP A1 - Fechtmann, C. A1 - Wedemeyer, Th. A1 - Mahnken, M. A1 - Immohr, J. A1 - Egbers, Christoph A1 - Rath, H. J. T1 - Entwicklung miniaturisierter Laser-Doppler-Anemometer Systeme Y1 - 2001 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Guo, Xiaoai A1 - Riebel, Ulrich T1 - Experimental and Numerical Investigations of Isothermal Fluid-Particle Flows in Vertical Cuvette Y1 - 2007 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Örli, Ramis A1 - Fiorini, Tommaso A1 - Bellani, Gabriele A1 - Talamelli, Alessandro T1 - Experimental evaluation of the mean momentum and kinetic energy balance equations in turbulent pipe flows at high Reynolds number T2 - Journal of Turbulence Y1 - 2019 U6 - https://doi.org/10.1080/14685248.2019.1628968 SN - 1468-5248 VL - 20 IS - 5 SP - 285 EP - 299 ER - TY - CHAP A1 - Hasanuzzaman, Gazi A1 - Merbold, Sebastian A1 - Motuz, Vasyl A1 - Egbers, Christoph A1 - Cuvier, Christophe A1 - Foucaut, Jean-Marc ED - Kähler, Christian J. ED - Hain, Rainer ED - Scharnowski, Sven ED - Fuchs, Thomas T1 - Experimental investigation of active control in turbulent boundary layer using uniform blowing T2 - Proceedings of the 5th International Conference on Experimental Fluid Mechanics, Munich 2018 Y1 - 2018 UR - https://doi.org/10.18726/2018_2 SN - 978-3-943207-32-3 SP - 180 EP - 185 PB - Institute of Fluid Mechanics and Aerodynamics, Universität der Bundeswehr CY - Neubiberg ER - TY - CHAP A1 - Guo, Xiaoai A1 - Riebel, Ulrich A1 - Gellert, Marcus A1 - Egbers, Christoph T1 - Experimental Investigation of Multiphase Flow Structure behind a Bluff Body by LDV and TFS Technique Y1 - 2006 ER - TY - GEN A1 - Seelig, Torsten A1 - Gellert, Marcus A1 - Harlander, Uwe T1 - Experimental investigation of stratorotational instability using a thermally stratified system: instability, waves and associated momentum flux T2 - Geophysical & Astrophysical Fluid Dynamics Y1 - 2018 U6 - https://doi.org/10.1080/03091929.2018.1488971 SN - 0309-1929 SN - 1029-0419 VL - 112 IS - 4 SP - 239 EP - 264 ER - TY - THES A1 - Butt, Usman T1 - Experimental investigation of the flow over macroscopic hexagonal structured surfaces Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-30555 UR - http://opus4.kobv.de/opus4-btu/frontdoor/index/index/docId/3055 ER - TY - CHAP A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Experimental Investigation of torque scaling in turbulent Taylor-Couette flow Y1 - 2011 ER - TY - CHAP A1 - Schäfer, H.-J. A1 - Augenstein, Edgar A1 - Esch, H. A1 - Emunds, H. T1 - Experimental Investigation of Transverse Jet Interaction on a Missile Body using Laser Velocimetry and Flow Visualization Y1 - 2001 ER - TY - THES A1 - Hasanuzzaman, Gazi T1 - Experimental investigation of turbulent boundary layer with uniform blowing at moderate and high Reynolds numbers N2 - Experimental investigation in turbulent boundary layer flows represents one of the canonical geometries of wall bounded shear flows. Utmost relevance of such experiments, however, is applied in the engineering applications in aerospace and marine industries. In particular, continuous effort is being imparted to explore the underlying physics of the flow in order to develop models for numerical tools and to achieve flow control. Within the scope of this Ph. D. topic, application of active control method such as micro-blowing effect in the incompressible, zero pressure gradient turbulent boundary layer was investigated. Turbulent boundary layer flow is particularly interesting as well as challenging due to the presence of different interacting scales which are increasingly becoming significant as the flow inertial conditions keeps growing. Therefore, energy content of the coherent structures in outer layer becomes stronger and necessitates measurements in relatively large Reynolds number. Present control experiments in turbulent boundary layer can be split into two different work segments, where one is objected towards the data measurements in turbulent boundary layer over smooth surface with and without any external perturbation. Here, perturbation is applied in the form of wall normal blowing while keeping the magnitude of blowing very low compared to the free stream velocity. For the subsequent results reported here, magnitude of blowing ratio was varied between 0%~6%. In the first part of the present thesis e.g. 0.415×10e+3≤Reτ≤1.160×10e+3, measurements were performed at the Brandenburg University of Technology wind tunnel. Non-intrusive Laser Doppler Anemometry was applied to carry out a series of measurements on a zero pressure gradient flat plate turbulent boundary layer. Blowing ratio through the perforated surface was varied between 0.17%~1.52% of the free stream velocity. To a maximum of 50% reduction in friction drag was achieved. For the measurements on the upper range of the stated Reynolds number, were conducted at the boundary layer wind tunnel. This boundary layer wind tunnel offers a spatially developed turbulent boundary layer over a flat plate within 2.2×10e+3≤Reτ≤5.5×10e+3 with an excellent spatial resolution. With the help of Stereo Particle Image Velocimetry technique, measurement of the velocity components were obtained covering entire boundary layer in streamwise wall normal plane. In addition, time resolved measurements were also obtained in spanwise and wall-normal plane in order to look into the morphology of turbulent structures immediately above the blowing area. KW - Turbulent boundary layers KW - Drag reduction KW - Flow control KW - Particle Image Velocimetry Y1 - 2021 U6 - https://doi.org/10.26127/BTUOpen-5566 PB - BTU CY - Cottbus-Senftenberg ER - TY - GEN A1 - Hasanuzzaman, Gazi A1 - Merbold, Sebastian A1 - Cuvier, Christophe A1 - Motuz, Vasyl A1 - Foucaut, Jean-Marc A1 - Egbers, Christoph T1 - Experimental investigation of turbulent boundary layers at high Reynolds number with uniform blowing, part I: statistics T2 - Journal of Turbulence N2 - Uniform blowing in wall bounded shear flows is well known for its drag reducing effects and has long been investigated ever since. However, many contemporary and former research on this topic has confirmed the drag reducing effect but very less is known regarding how blowing is effecting the Reynolds stresses at high Reynolds number. Therefore, effect of uniform blowing has been experimentally investigated using Stereo Particle Image Velocimetry (SPIV) measurements in a zero pressure gradient turbulent boundary layer (TBL). The data presented in this literature covers a large range of high Reynolds number flow e.g. Reθ = 7500∼19763 where Reynolds number is based on the momentum thickness. Upstream blowing was varied from 1%∼6% of free stream velocity and measurements were taken downstream after a short interval. Logarithmic and outer region of the TBL was given special attention in terms of investigating statistics and turbulence properties. KW - Turbulent boundary layers KW - drag reduction KW - flow control KW - particle image velocimetry KW - uniform blowing Y1 - 2020 UR - https://www.tandfonline.com/doi/full/10.1080/14685248.2020.1740239 U6 - https://doi.org/10.1080/14685248.2020.1740239 SN - 1468-5248 N1 - European High-Performance Infrastructures in Turbulence (EuHIT, FP7-INFRASTRUCTURES-2012-1) IS - 3 SP - 129 EP - 165 ER - TY - GEN A1 - Hamede, Mohammed Hussein A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Experimental investigation of turbulent counter-rotating Taylor–Couette flows for radius ratio η = 0.1 T2 - Journal of Fluid Mechanics Y1 - 2023 U6 - https://doi.org/10.1017/jfm.2023.392 SN - 1469-7645 VL - 964 SP - A36-1 EP - A36-29 ER - TY - RPRT A1 - Öngüner, Emir A1 - Egbers, Christoph T1 - Experimental Investigation of Turbulent Pipe Flow Structures in High Reynolds Numbers Y1 - 2013 SP - 17 EP - 18 PB - Lehrstuhl Aerodynamik und Strömungslehre CY - Cottbus ER - TY - CHAP A1 - Hasanuzzaman, Gazi A1 - Merbold, Sebastian A1 - Motuz, Vasyl A1 - Egbers, Christoph ED - Egbers, Christoph T1 - Experimental Investigation of Turbulent Structures and their Control in Boundary Layer Flow T2 - Experimentelle Strömungsmechanik, 24. Fachtagung 6.-8. September 2016 Cottbus Y1 - 2016 SN - 978-3-9816764-2-6 SP - S. 27 PB - German Association for Laser Anemometry GALA e.V. CY - Karlsruhe ER - TY - THES A1 - Merbold, Sebastian T1 - Experimental investigation on turbulent transport in Taylor-Couette flow Y1 - 2019 UR - https://cuvillier.de/de/shop/publications/8089-experimental-investigation-on-turbulent-transport-in-taylor-couette-flow SN - 978-3-7369-7068-7 PB - Cuvillier Verlag CY - Göttingen ET - 1. Auflage ER - TY - GEN A1 - Hallol, Zeinab A1 - Yousry, Mohamed A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Experimental investigation to study energetic structures in pipe flow at high Reynolds numbers using POD analysis T2 - Journal of the Physical Society of Japan Y1 - 2022 U6 - https://doi.org/10.7566/JPSJ.91.094401 SN - 0031-9015 VL - 91 IS - 9 SP - 1 EP - 10 ER - TY - CHAP A1 - Froitzheim, Andreas A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Experimental Investigations of Taylor-Couette flow at BTU Cottbus T2 - Book of abstracts, School Instabilities and Turbulence in Stratified Rotational Flows (ISTROF), 11-13 September, Le Havre, France, 2016 Y1 - 2016 UR - https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxzY2hvb2xpc3Ryb2Z8Z3g6NDA3Y2E3ZGQ2OWIwMTdmNQ ER - TY - CHAP A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Experimental investigations on torque scaling in turbulent Taylor-Couette-Flow Y1 - 2011 ER - TY - GEN A1 - Hamede, Mohammed Hussein A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Experimental methods for investigating the formation of flow patterns in a very wide gap Taylor-Couette flow ($\eta=0.1$) T2 - tm - Technisches Messen Y1 - 2023 U6 - https://doi.org/10.1515/teme-2022-0107 SN - 2196-7113 VL - 90 IS - 5 SP - 332 EP - 339 ER - TY - CHAP A1 - Rodda, Costanza A1 - Borcia, Ion-Dan A1 - Harlander, Uwe T1 - Experimental results on intertia gravity wave emission from baroclinic jets 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 - Hoff, Michael A1 - Harlander, Uwe A1 - Jahangir, Saad A1 - Egbers, Christoph T1 - Experimental study of inertial waves in a spherical shell induced by librations of the inner sphere T2 - European Geosciences Union, General Assembly 2015, Vienna, Austria, 13 April - 17 May 2015 Y1 - 2015 UR - http://meetingorganizer.copernicus.org/EGU2015/EGU2015-5650.pdf N1 - EGU2015-5650 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Rodda, Costanza A1 - Borcia, Ion-Dan A1 - Harlander, Uwe T1 - Experimental study of internal wave emission from baroclinic jets T2 - 11th European Fluid Mechanics Conference, Sept. 12-16, 2016, Sevilla, Spain Y1 - 2016 UR - http://www.efmc11.org/download/com/com_0145_C1CLR1.pdf ER - TY - CHAP A1 - Hoff, Michael A1 - Harlander, Uwe A1 - Egbers, Christoph T1 - Experimental study of the fluid flow in a spherical shell induced by librations of the inner sphere: linear and non-linear features T2 - ICTW 19, Book of Abstractc, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany Y1 - 2015 SP - 86 EP - 87 CY - Cottbus ER - TY - CHAP A1 - Egbers, Christoph A1 - Brucks, A. T1 - Experimental study on thermal convective instabilities in the rotating wide spherical gap flow Y1 - 2001 ER - TY - GEN A1 - Hoff, Michael A1 - Harlander, Uwe A1 - Egbers, Christoph T1 - Experimental survey of linear and nonlinear inertial waves and wave instabilities in a spherical shell T2 - Journal of Fluid Mechanics Y1 - 2016 U6 - https://doi.org/10.1017/jfm.2015.743 SN - 1750-6859 IS - vol. 789 SP - 589 EP - 616 ER - TY - GEN A1 - Nowak, Torsten A1 - Merbold, Sebastian A1 - Egbers, Christoph A1 - Schacht, Ralph ED - Delgado, Antonio T1 - Experimentelle Studie mit numerischer Validierung von thermi-schen Kopplungs-Phänomenen mit in Flip-Chip-Technologie aufge-bauten Testchips auf Leiterplatten T2 - Experimentelle Strömungsmechanik : 27. Fachtagung 3.-5. September 2019 Erlangen N2 - In aktuellen mikro-elektronischen Systemen müssen verschiedene aktive und passive Bauteile auf engstem Raum miteinander auf dem Substrate (bspw. FR4-Leiterplatte) kombiniert werden. Die dabei stetig steigende Leistungsdichte bedarf einer optimierten Kühlstrategie und der Definition von konduktiven und konvektiven Entwärmungspfade, die bereits während der Layout-Designphase der Baugruppe berücksichtigt werden sollten. Strömungsmechanische Simulationen (CFD) können dabei ein erstes Abbild zur Analyse von Kopplungseffekten zwischen den Wärmequellen und der Umgebung liefern. Diese sind jedoch oft zeitaufwendig und es bedarf zumindest ein gewisses Grundverständnis, um die Fluid-mechanischen Parameter, das Vernetzen der Geometrien und die gewonnenen Ergebnisse korrekt zu interpretieren. Erste analytische Ansätze zur reduzierten Beschreibung von ungehäusten Chips auf Leiterplattensubstrat können durch thermische Widerstandsnetzwerke abgebildet und durch Aufteilung der Wärmeströme in Richtung Substrat (Wärmeleitung) und in Richtung des bewegten Fluides (Konvektion) näher beschrieben werden. KW - Wärmekopplung KW - Mikroelektronik KW - in-situ Temperaturerfassung Y1 - 2019 SN - 978-3-9816764-6-4 SP - 27.1 EP - 27.8 PB - Deutsche Gesellschaft für Laser-Anemometrie - German Association for Laser Anemometry GALA e.V. CY - Karlsruhe ER - TY - THES A1 - Futterer, Birgit T1 - Experimentelle und numerische Untersuchungen von Kugelspaltströmungen Y1 - 2006 SN - 3-18-348507-9 PB - VDI-Verl. CY - Düsseldorf ER - TY - CHAP A1 - Öngüner, Emir A1 - König, Franziska A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Experimentelle Untersuchung der turbulenten Rohrstrukturen bei hohen Reynolds Zahlen T2 - GALA - Fachtagung Lasermethoden in der Strömungsmesstechnik, 22. Fachtagung, 9. - 11. September 2014, Karlsruhe Y1 - 2014 SN - 978-3-9816764-0-2 SP - S. 24 PB - GALA CY - Karlsruhe ER - TY - CHAP A1 - Hasanuzzaman, Gazi A1 - Merbold, Sebastian A1 - Egbers, Christoph ED - Czarske, Jürgen T1 - Experimentelle Untersuchung von Gebäude-integrierten Windführungen mit Laser-Doppler- Anemometrie T2 - Lasermethoden in der Strömungsmesstechnik, 23. Fachtagung, 8. - 10. September 2015, Dresden Y1 - 2015 SN - 978-3-9816764-1-9 SP - S. 64 PB - GALA CY - Karlsruhe ER - TY - CHAP A1 - Larcher, Thomas von A1 - Egbers, Christoph T1 - Experimentelle Untersuchung von Strömungsphänomenen freier Konvektion in einem rotierenden, von innen gekühlten Zylinderspalt T2 - Lasermethoden in der Strömungsmesstechnik, 14. Fachtagung Lasermethoden in der Strömungsmesstechnik, 5. bis 7. September 2006, Physikalisch-Technische Bundesanstalt, Braunschweig Y1 - 2006 SN - 3-9805613-3-X PB - Physikalisch-Techn. Bundesanstalt CY - Braunschweig ER - TY - GEN A1 - Maltese Meletti de Oliveira, Gabriel A1 - Abide, Stéphane A1 - Viazzo, Stephane A1 - Krebs, Andreas A1 - Harlander, Uwe T1 - Experiments and long-term high-performance computations on amplitude modulations of strato-rotational flows T2 - Geophysical & Astrophysical Fluid Dynamics Y1 - 2021 U6 - https://doi.org/10.1080/03091929.2020.1795647 SN - 1029-0419 SN - 0309-1929 VL - 115 IS - 3 SP - 297 EP - 321 ER - TY - CHAP A1 - Egbers, Christoph A1 - Beltrame, Philippe A1 - Travnikov, Vadim T1 - Experiments and numerical simulation of supercritical thermal convective motions in the spherical gap flow experiment under central force field (GEOFLOW) Y1 - 2004 ER - TY - THES A1 - Öngüner, Emir T1 - Experiments in Pipe Flows at Transitional and Very High Reynolds Numbers Y1 - 2018 SN - 978-3-73699-783-7 PB - Göttingen CY - Cuvillier Verlag ER - TY - JOUR A1 - Larcher, Thomas von A1 - Beyer, Wolfgang A1 - Egbers, Christoph T1 - Experiments on baroclinic instabilities Y1 - 2004 ER - TY - CHAP A1 - Larcher, Thomas von A1 - Egbers, Christoph T1 - Experiments on baroclinic instability in a differentially heated rotating annulus Y1 - 2007 ER - TY - THES A1 - Xu, Wenchao T1 - Experiments on nonlinear waves in homogeneous flows with free upper surface and time-dependent forcing T2 - Experimente zu nichtlinearen Wellen in homogenen Strömungen mit freier Oberfläche und zeitabhängigem Antrieb Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-53860 CY - Cottbus ER - TY - CHAP A1 - Somosvari, B. A1 - Meier, M. A1 - Babcsan, N. T1 - Experiments on particle loaded aqueous foams Y1 - 2005 ER - TY - CHAP A1 - Somosvari, B. A1 - Meier, M. T1 - Experiments on Particles Stabilized Aqueous Foams Y1 - 2005 ER - TY - CHAP A1 - Schmidt, J.-R. A1 - Egbers, Christoph A1 - Rath, H. J. T1 - Experiments on the isothermal flow in wide spherical gaps Y1 - 2001 ER - TY - CHAP A1 - Meier, M. A1 - Hille, D. A1 - Wallot, G. T1 - Experiments on the stability of solid particle Ioaden aqueous foams Y1 - 2003 ER - TY - CHAP A1 - Jongmanns, Marcel A1 - Meyer, Antoine A1 - Meier, Martin A1 - Kang, Changwoo A1 - Mutabazi, Innocent A1 - Egbers, Christoph T1 - Experiments on thermoelectric convection in dielectric liquids in a cylindrical annulus under parabolic flight conditions T2 - Abstract booklet for the International Conference on Rayleigh Bénard Turbulence, May 14-18, 2018, Enschede, NL Y1 - 2018 UR - https://pof.tnw.utwente.nl/rbc2018/wp-content/uploads/2018/05/RBC2018_abstract_booklet.pdf ER - TY - CHAP A1 - Meyer, Antoine A1 - Jongmanns, Marcel A1 - Meier, Martin A1 - Seelig, Torsten A1 - Kang, Changwoo A1 - Mutabazi, Innocent A1 - Egbers, Christoph T1 - Experiments on thermoelectric convection induced in a cylindrical annulus under microgravity conditions 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 - CHAP A1 - Larcher, Thomas von T1 - Experiments on transitions of baroclinic waves in a differentially heated rotating annulus with a free surface Y1 - 2005 ER - TY - CHAP A1 - Froitzheim, Andreas A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Experimentsl Investigations of Taylor-Couette flow at BTU Cottbus 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 - GEN A1 - Futterer, Birgit A1 - Yoshikawa, Harunori A1 - Mutabazi, Innocent A1 - Egbers, Christoph ED - Beysens, Daniel ED - Loon, Jacobus van T1 - Facilities to alter weight - Electric Fields T2 - Generation and Applications of Extra-Terrestrial Environments on Earth Y1 - 2015 SN - 978-87-93237-53-7 SN - 978-87-93237-54-4 SP - 91 EP - 100 PB - River Publ. CY - Aalborg ER - TY - GEN A1 - Futterer, Birgit A1 - Egbers, Christoph A1 - Koch, Sandy A1 - Dahley, Norman A1 - Jehring, Lothar T1 - First identication of sub-and supercritical convection patterns from GeoFlow, the geophysical flow simulation experiment integrated in Fluid Science Laboratory Y1 - 2010 ER - TY - CHAP A1 - Egbers, Christoph T1 - First results from large pipe test facility at BTU Cottbus Y1 - 2011 ER - TY - THES A1 - Jongmanns, Marcel T1 - Flow control of thermal convection using thermo electro hydrodynamic forces in a cylindrical annulus Y1 - 2019 SN - 978-3-7369-7044-1 SN - 3-7369-7044-7 PB - Cuvillier Verlag CY - Göttingen ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Egbers, Christoph T1 - Flow Developments in Smooth Wall Circular Duct Facility Y1 - 2006 ER - TY - CHAP A1 - Froitzheim, Andreas A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Flow organization in the region of the torque maximum in a wide gap Tayor-Couette experiment 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. 362 ER - TY - CHAP A1 - Merbold, Sebastian A1 - Froitzheim, Andreas A1 - Egbers, Christoph ED - Fröhlich, Jochen ED - Odenbach, Stefan ED - Vogeler, Konrad T1 - Flow Pattern and angular motion transport in a wide gap Taylor-Couette flow T2 - Strömungstechnische Tagung 2014, Tagung anlässlich des 100. Geburtstags von Werner Albring Y1 - 2014 SN - 978-3-944331-78-2 PB - TUDpress Verlag der Wissenschaften CY - Dresden ER - TY - GEN A1 - Meier, Martin A1 - Jongmanns, Marcel A1 - Meyer, Antoine A1 - Seelig, Torsten A1 - Egbers, Christoph A1 - Mutabazi, Innocent T1 - Flow Pattern and Heat Transfer in a Cylindrical Annulus Under 1 g and Low-g Conditions: Experiments T2 - Microgravity science and technology : international journal for microgravity research and applications Y1 - 2018 U6 - https://doi.org/10.1007/s12217-018-9649-y SN - 1875-0494 SN - 0938-0108 VL - 30 IS - 5 SP - 699 EP - 712 ER - TY - CHAP A1 - Meier, Martin A1 - Jongmanns, Marcel A1 - Ruoff, Vilko A1 - Egbers, Christoph A1 - Meyer, Antoine A1 - Mutabazi, Innocent T1 - Flow pattern and heat transfer in a cylindrical annulus under 1g and low-g conditions: Experiments T2 - Joint Conference ISPS-7 and ELGRA-25 October, 2–6 2017, Juan-les-Pins, France, Abstract book Y1 - 2017 SP - S. 48 ER - TY - CHAP A1 - Meyer, Antoine A1 - Crumeyrolle, Olivier A1 - Mutabazi, Innocent A1 - Meier, Martin A1 - Jongmanns, Marcel A1 - Ruoff, Vilko A1 - Seelig, Torsten A1 - Egbers, Christoph T1 - Flow pattern and heat transfer in a cylindrical annulus under 1g and low-g conditions: theory and simulation T2 - Joint Conference ISPS-7 and ELGRA-25 October, 2–6 2017, Juan-les-Pins, France, Abstract book Y1 - 2017 SP - S. 48 ER - TY - GEN A1 - Meyer, Antoine A1 - Crumeyrolle, Olivier A1 - Mutabazi, Innocent A1 - Meier, Martin A1 - Jongmanns, Marcel A1 - Renoult, Marie-Charlotte A1 - Seelig, Torsten A1 - Egbers, Christoph T1 - Flow Patterns and Heat Transfer in a Cylindrical Annulus under 1g and low-g Conditions: Theory and Simulation T2 - Microgravity Science and Technology Y1 - 2018 U6 - https://doi.org/10.1007/s12217-018-9636-3 SN - 0938-0108 SN - 1875-0494 VL - 30 IS - 5 SP - 653 EP - 662 ER - TY - GEN A1 - Merbold, Sebastian A1 - Hamede, Mohammed Hussein A1 - Froitzheim, Andreas A1 - Egbers, Christoph T1 - Flow regimes in a very wide-gap Taylo-Couette flow with counter rotating cylinders T2 - Philosophical transactions of the Royal Society : Series A, Mathematical, physical and engineering sciences Y1 - 2023 U6 - https://doi.org/10.1098/rsta.2022.0113 SN - 1364-503X SN - 1471-2962 VL - 381 IS - 2246 ER - TY - JOUR A1 - Smieszek, Marlene T1 - Flow structures and stability in Newtonian and non-Newtonian Taylor-Couette flow Y1 - 2005 ER - TY - CHAP A1 - Iwatsu, R. A1 - Egbers, Christoph T1 - Flows in a cylinder with top free surface driven by the bottom wall rotation Y1 - 2001 ER - TY - CHAP A1 - Hamede, Mohammed Hussein A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Formation of flow patterns in a counter-rotating very wide gap Taylor-Couette flow (η = 0.1) T2 - Experimentelle Strömungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau T2 - Bildung von Strömungsstrukturen in einem gegenrotierenden Taylor-Couette System mit sehr weitem Spalt (η = 0.1) Y1 - 2022 UR - https://www.gala-ev.org/images/Beitraege/Beitraege2022/pdf/48.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 - CHAP A1 - Froitzheim, Andreas A1 - Ezeta, Rodrigo A1 - Merbold, Sebastian A1 - Egbers, Christoph A1 - Lohse, D. A1 - Sun, C. T1 - Formation of large scale vortices in the torque maximum region in Taylor-Couette flow T2 - 25. GALA - Fachtagung Experimentelle Strömungsmechanik, 5.-7. September 2017, Karlsruhe-Ettlingen Y1 - 2017 SN - 978-3-9816764-3-3 SP - 55 EP - 58 PB - Deutsche Gesellschaft für Laser-Anemometrie GALA e.V. CY - Karlsruhe ER - TY - CHAP A1 - Jehring, Lothar A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Fortschritte bei der Entwicklung und Anwendung eines miniaturisierten Sensors für wandnahe Strömungen Y1 - 2005 ER - TY - GEN A1 - Futterer, Birgit A1 - Dahley, Norman A1 - Koch, Sandy A1 - Scurtu, Nicoleta A1 - Egbers, Christoph T1 - From isoviscous convective experiment 'GeoFlow I' to temperature-dependent viscosity in 'GeoFlow II' Fluid physics experiments on-board ISS for the capture of convection phenomena in Earth's outer core and mantle Y1 - 2012 ER - TY - CHAP A1 - Futterer, Birgit A1 - Dahley, Norman A1 - Koch, Sandy A1 - Scurtu, Nicoleta A1 - Egbers, Christoph A1 - Chossat, P. A1 - Hollerbach, Rainer A1 - Beltrame, Philippe A1 - Breuer, Doris A1 - Feudel, F. A1 - Mutabazi, Innocent A1 - Tuckerman, L. S. T1 - From isoviscous to temperature-dependent viscous flow within the fluid physics ISS COLUMBUS laboratory experiment GeoFlow Y1 - 2011 ER - TY - JOUR A1 - Larcher, Thomas von A1 - Futterer, Birgit A1 - Egbers, Christoph A1 - Hollerbach, Rainer A1 - Chossat, P. T1 - Geoflow - European Microgravity Experiments on Thermal Convection in Rotating Spherical Shells under influence of Central Force Field Y1 - 2008 ER - TY - CHAP A1 - Larcher, Thomas von A1 - Futterer, Birgit A1 - Egbers, Christoph A1 - Hollerbach, Rainer A1 - Chossat, P. T1 - Geoflow - European Microgravity Experiments on Thermal Convection in Rotating Spherical Shells under influence of Central Force Field Y1 - 2007 ER - TY - GEN A1 - Travnikov, Vadim A1 - Egbers, Christoph A1 - Hollerbach, Rainer T1 - GEOFLOW-experiment on ISS (part 2) : numerical simulation T2 - Advances in Space Research Y1 - 2002 U6 - https://doi.org/10.1016/S0273-1177(03)90249-3 SN - 0273-1177 VL - 32 IS - 2 SP - 181 EP - 189 ER - TY - GEN A1 - Beltrame, Philippe A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - GEOFLOW-experiment on ISS (part 3): Bifurcation analysis Y1 - 2002 U6 - https://doi.org/10.1016/S0273-1177(03)90250-X SN - 0273-1177 VL - 32 IS - 2 SP - 191 EP - 197 ER - TY - JOUR A1 - Futterer, Birgit A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - GeoFlow: 3D numerical simulation of supercritical thermal convective states Y1 - 2008 ER - TY - CHAP A1 - Futterer, Birgit A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - GeoFlow: 3D numerical simulation of supercritical thermal convective states Y1 - 2007 ER - TY - JOUR A1 - Larcher, Thomas von A1 - Futterer, Birgit A1 - Egbers, Christoph T1 - GeoFlow: On the status of experimental preparation of spherical gap flow experiments with central force field on International Space Station (ISS) Y1 - 2008 ER - TY - JOUR A1 - Beltrame, Philippe A1 - Travnikov, Vadim A1 - Gellert, Marcus A1 - Egbers, Christoph T1 - GEOFLOW: Simulation of convection in a spherical gap under central force field Y1 - 2006 ER - TY - THES A1 - Motuz, Vasyl T1 - Gleichmäßiges Mikro-Ausblasen zur Beeinflussung einer turbulenten Grenzschicht Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-31242 ER - TY - THES A1 - Rodda, Costanza T1 - Gravity wave emission from jet systems in the differentially heated rotating annulus experiment Y1 - 2019 SN - 978-3-7369-7110-3 PB - Cuvillier Verlag CY - Göttingen ET - 1. Auflage ER - TY - CHAP A1 - Beltrame, Philippe A1 - Egbers, Christoph A1 - Travnikov, Vadim T1 - Heteroclinic cycles in the geoflowexperiment on the International Space Station Y1 - 2003 SN - 84-95999-28-5 ER - TY - CHAP A1 - Beltrame, Philippe A1 - Egbers, Christoph T1 - Heteroclinic cycles of type II in the (2,3) interaction in the GEOFLOW-experiment Y1 - 2004 ER - TY - CHAP A1 - Herzog, Nicoleta A1 - Gorenz, Paul A1 - Egbers, Christoph T1 - High pressurized CO2 release CFD calculations from onshore pipeline leakages T2 - European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 – 12 April 2013 Y1 - 2013 UR - http://meetingorganizer.copernicus.org/EGU2013/EGU2013-1879.pdf N1 - EGU2013-1879 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Egbers, Christoph T1 - High Reynolds Number Fully Developed Turbulent Pipe Flows Y1 - 2005 ER - TY - THES A1 - Maltese Meletti de Oliveira, Gabriel T1 - High-performance computing and laboratory experiments on strato-rotational instabilities Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-54408 CY - Cottbus ER - TY - GEN A1 - Borcia, Ion-Dan A1 - Borcia, Rodica A1 - Bestehorn, Michael A1 - Richter, Stefan A1 - Xu, Wenchao A1 - Harlander, Uwe T1 - Horizontal Faraday instability and parametric excitation in a circular channel T2 - GAMM 2019, 90th Annual Meeting of the International Assoociation of Applied Mathematics and Mechanics, February 18-22, 2019, Vienna, Austria Y1 - 2018 UR - https://jahrestagung.gamm-ev.de/images/2019/Photos/GAMM2019_BookofAbstracts.pdf SN - 978-3-903024-84-7 SP - 338 PB - TU Verlag CY - Wien ER - TY - CHAP A1 - Meier, Martin A1 - Ristau, R. A1 - Egbers, Christoph T1 - InertGasCondensation (IGC) - Process - Characterization in a microgravity environment Y1 - 2001 ER - TY - CHAP A1 - Randriamampianina, Anthony A1 - Harlander, Uwe A1 - Vincze, Miklos A1 - Seelig, Torsten A1 - Larcher, Thomas von A1 - Viazzo, Stephane T1 - Inertia gravity waves linked to baroclinic waves in a rotating, differentially heated annulus with an upper free surface T2 - ICTW 19 Book of Abstracts, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany Y1 - 2015 SP - 38 EP - 39 CY - Cottbus ER - TY - GEN A1 - Xu, Wenchao A1 - Harlander, Uwe T1 - Inertial mode interactions in a rotating tilted cylindrical annulus with free surface T2 - Physical Review Fluids Y1 - 2020 UR - https://journals.aps.org/prfluids/abstract/10.1103/PhysRevFluids.5.094801 U6 - https://doi.org/10.1103/PhysRevFluids.5.094801 SN - 2469-990X VL - 5 IS - 9 ER - TY - CHAP A1 - Hoff, Michael A1 - Harlander, Uwe A1 - Triana, Santiago Andrés A1 - Egbers, Christoph T1 - Inertial modes and their transition to turbulence in a differentially rotating spherical gap flow T2 - European Geosciences Union, General Assembly 2016, Vienna, Austria, 17-22. April 2016 Y1 - 2016 UR - http://meetingorganizer.copernicus.org/EGU2016/EGU2016-6990.pdf N1 - EGU2016-6990 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Triana, Santiago Andrés A1 - Hoff, Michael A1 - Egbers, Christoph T1 - Inertial Modes driven by differential rotation in a spherical Couette configuration T2 - ICTW 19, Book of Abstracts, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany Y1 - 2015 SP - 84 EP - 85 CY - Cottbus ER - TY - GEN A1 - Klein, Marten A1 - Seelig, Torsten A1 - Kurgansky, Michael V. A1 - Ghasemi, Abouzar A1 - Borcia, Ion-Dan A1 - Will, Andreas A1 - Schaller, Eberhard A1 - Egbers, Christoph A1 - Harlander, Uwe T1 - Inertial wave excitation and focusing in a liquid bounded by a frustum and a cylinder T2 - Journal of Fluid Mechanics N2 - The mechanism of localized inertial wave excitation and its efficiency is investigated for an annular cavity rotating with Ω0 . Meridional symmetry is broken by replacing the inner cylinder with a truncated cone (frustum). Waves are excited by individual longitudinal libration of the walls. The geometry is non-separable and exhibits wave focusing and wave attractors. We investigated laboratory and numerical results for the Ekman number E ≈ 10−6. inclination α = 5.71◦ and libration amplitudes ε 0.2 within the inertial wave band 0 < ω < 2Ω0 . Under the assumption that the inertial waves do not essentially affect the boundary-layer structure, we use classical boundary-layer analysis to study oscillating Ekman layers over a librating wall that is at an angle α = 0 to the axis of rotation. The Ekman layer erupts at frequency ω = f∗, where f∗ ≡ 2Ω0 sin α is the effective Coriolis parameter in a plane tangential to the wall. For the selected inclination this eruption occurs for the forcing frequency ω/Ω0 = 0.2. For the librating lids eruption occurs at ω/Ω0 = 2. The study reveals that the frequency dependence of the total kinetic energy Kω of the excited wave field is strongly connected to the square of the Ekman pumping velocity wE (ω) that, in the linear limit, becomes singular when the boundary layer erupts. This explains the frequency dependence of non-resonantly excited waves. By the localization of the forcing, the two configurations investigated, (i) frustum libration and (ii) lids together with outer cylinder in libration, can be clearly distinguished by their response spectra. Good agreement was found for the spatial structure of low-order wave attractors and periodic orbits (both characterized by a small number of reflections) in the frequency windows predicted by geometric ray tracing. For ‘resonant’ frequencies a significantly increased total bulk energy was found, while the energy in the boundary layer remained nearly constant. Inertial wave energy enters the bulk flow via corner beams, which are parallel to the characteristics of the underlying Poincaré problem. Numerical simulations revealed a mismatch between the wall-parallel mass fluxes near the corners. This leads to boundary-layer eruption and the generation of inertial waves in the corners. KW - boundary-layer structure KW - geophysical and geological flows KW - waves in rotating fluids Y1 - 2014 U6 - https://doi.org/10.1017/jfm.2014.304 SN - 1750-6859 IS - vol. 751 SP - 255 EP - 297 ER - TY - CHAP A1 - Klein, Marten A1 - Ghasemi, Abouzar A1 - Harlander, Uwe A1 - Will, Andreas T1 - Inertial wave excitation and wave attractors in a librating annulus: DNS T2 - European Geosciences Union, General Assembly 2014, Vienna, Austria, 27 April – 02 May 2014 KW - boundary-layer structure KW - geophysical and geological flows KW - waves in rotating fluids KW - direct numerical simulations Y1 - 2014 N1 - EGU2014-15585 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - THES A1 - Seelig, Torsten T1 - Inertial wave propagation, focusing and mean flow excitation : theory and experiments Y1 - 2014 SN - 978-3-95404-793-2 SN - 978-3-7369-4793-1 PB - Cuvillier CY - Göttingen ER - TY - CHAP A1 - Seelig, Torsten A1 - Borcia, Ion-Dan A1 - Klein, Marten A1 - Ghasemi, Abouzar A1 - Will, Andreas A1 - Egbers, Christoph A1 - Schaller, Eberhard A1 - Harlander, Uwe T1 - Inertial waves and wave attractors in a rotating annulus with inner or outer cylinder libration T2 - European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 – 12 April 2013 Y1 - 2013 UR - http://meetingorganizer.copernicus.org/EGU2013/EGU2013-7602.pdf N1 - EGU2013-7602 ER - TY - CHAP A1 - Klein, Marten A1 - Borcia, Ion-Dan A1 - Egbers, Christoph A1 - Ghasemi, Abouzar A1 - Harlander, Uwe A1 - Kurgansky, Michael V. A1 - Schaller, Eberhard A1 - Seelig, Torsten A1 - Will, Andreas T1 - Inertial Waves and Wave Excitation Mechanisms in Annular Cavities: Simulations, Experiments and Theory T2 - European Turbulence Conference ETC14, Lyon, 2013 KW - boundary-layer structure KW - geophysical and geological flows KW - waves in rotating fluids Y1 - 2013 UR - http://etc14.ens-lyon.fr/etc-14-proceedings/accepted-talks ER - TY - GEN A1 - Borcia, Ion-Dan A1 - Harlander, Uwe T1 - Inertial waves in a rotating annulus with inclined inner cylinder: comparing the spectrum of wave attractor frequency bands and the eigenspectrum in the limit of zero inclination T2 - Theoretical and Computational Fluid Dynamics Y1 - 2013 U6 - https://doi.org/10.1007/s00162-012-0278-6 SN - 1432-2250 VL - 27 IS - 3-4 SP - 397 EP - 413 ER - TY - CHAP A1 - Koch, Sandy A1 - Harlander, Uwe A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - Inertial waves in a rotating spherical shell: Comparison between numerical simulations and laboratory experiments T2 - European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April Y1 - 2012 UR - http://meetingorganizer.copernicus.org/EGU2012/EGU2012-7342.pdf N1 - EGU2012-7342 ER -