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 - 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 - 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 - Rodda, Costanza A1 - Harlander, Uwe A1 - Savaro, C. A1 - Campagne, A. A1 - Calpe Linares, M. A1 - Augier, P. A1 - Sommeria, Joel A1 - Valran, T. A1 - Viboud, Samuel A1 - Mordant, N. T1 - Can Laboratory experiments help to explain the atmosphere and ocean's energetics? T2 - Colaborative Research Center TRR 181, Energy transfers in Atmosphere and Oceans, 16th - 18th Mar. 2021, Universität Hamburg, Center for Earth System Research and Sustainability (CEN) Y1 - 2021 UR - https://www.b-tu.de/fg-aerodynamik-stroemungslehre/publikationen/tagungsbaende 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 - Travnikov, Vadim A1 - Egbers, Christoph T1 - Linear stability analysis of the convective flow in a spherical gap with rotating inner surface T2 - International Journal of Heat and Mass Transfer Y1 - 2020 UR - https://www.sciencedirect.com/science/article/pii/S0017931019315716?via%3Dihub U6 - https://doi.org/10.1016/j.ijheatmasstransfer.2019.119052 SN - 0017-9310 SN - 1879-2189 VL - 148 ER - TY - GEN A1 - Hallol, Zeinab A1 - Yousry, Mohamed A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Time-resolved PIV measurements in fully developed turbulent pipe flow T2 - 25th International Congress of Theoretical and Applied Mechanics Milan (Italy), 22-27 August 2021 Y1 - 2021 UR - https://iutam.org/publications/ictam-proceedings/ictam_2020/ SN - 978-83-65550-31-6 SP - 1374 EP - 1375 ER - TY - GEN A1 - Szabo, Peter A1 - Zaussinger, Florian A1 - Haun, Peter A1 - Travnikov, Vadim A1 - Meier, Martin A1 - Egbers, Christoph T1 - Complementary numerical and experimental study in the baroclinic annulus for the microgravity experiment AtmoFlow T2 - EGU General Assembly 2020, EGU2020-20956, Online | 4–8 May 2020 Y1 - 2020 U6 - https://doi.org/10.5194/egusphere-egu2020-20956 ER - TY - GEN A1 - Zaussinger, Florian A1 - Canfield, Peter A1 - Froitzheim, Andreas A1 - Travnikov, Vadim A1 - Haun, Peter A1 - Meier, Martin A1 - Meyer, Antoine A1 - Heintzmann, Pascal A1 - Driebe, Thomas A1 - Egbers, Christoph T1 - AtmoFlow - Investigation of Atmospheric-Like Fluid Flows Under Microgravity Conditions T2 - Microgravity Science and Technology : An International Journal for Microgravity and Space Exploration Related Research Y1 - 2019 UR - https://link.springer.com/article/10.1007/s12217-019-09717-7 UR - 1875-0494 UR - https://www-docs.b-tu.de/fg-aerodynamik-stroemungslehre/public/PDF/Pubs/ELGRA2019_Book-of-abstracts.pdf U6 - https://doi.org/10.1007/s12217-019-09717-7 SN - 0938-0108 SP - 1 EP - 19 PB - Springer 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 - GEN A1 - Sesterhenn, Jörn A1 - Shahirpour, Amir T1 - A characteristic dynamic mode decomposition T2 - Theoretical and computational fluid dynamics Y1 - 2019 UR - https://rdcu.be/bCCti U6 - https://doi.org/10.1007/s00162-019-00494-y SN - 1432-2250 VL - 33 IS - 3-4 SP - 281 EP - 305 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 - GEN A1 - Meyer, Antoine A1 - Seelig, Torsten A1 - Gerstner, Philipp A1 - Kang, Changwoo A1 - Meier, Martin A1 - Jongmanns, Marcel A1 - Baumann, Martin A1 - Mutabazi, Innocent A1 - Heuveline, Vincent A1 - Egbers, Christoph T1 - Thermo-electro-hydrodynamic instability of a dielectric fluid in a vertical cylindrical annulus: Earth’s gravity and weightless conditions T2 - LIA-ISTROF workshop 2019 Instabilities and Turbulence in Stratified Rotational Flows Cottbus, 19th-20th June 2019 Brandenburg Y1 - 2019 UR - https://www-docs.b-tu.de/fg-aerodynamik-stroemungslehre/public/PDF/Pubs/ELGRA2019_Book-of-abstracts.pdf CY - Cottbus 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 - GEN A1 - Meyer, Antoine A1 - Seelig, Torsten A1 - Meier, Martin A1 - Mutabazi, Innocent A1 - Egbers, Christoph T1 - Thermo-electro-hydrodynamic instability of a dielectric fluid in a vertical cylindrical annulus: Earth's gravity and weightless conditions 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 - 115 EP - 116 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 - GEN A1 - Meyer, Antoine A1 - Seelig, Torsten A1 - Gerstner, Philipp A1 - Kang, Changwoo A1 - Meier, Martin A1 - Jongmanns, Marcel A1 - Baumann, Martin A1 - Mutabazi, Innocent A1 - Heuveline, Vincent A1 - Egbers, Christoph T1 - Thermoelectric instability in a vertical cylindrical annulus T2 - 8th International Symposium on Bifurcations and Instabilities in Fluid Dynamics (BIFD), 16-19 July, 2019, University of Limerick, Ireland Y1 - 2019 CY - Limerick ER - TY - CHAP A1 - Yousry, Mohamed A1 - Merbold, Sebastian A1 - Egbers, Christoph ED - Delgado, Antonio T1 - Influence of convex structured surfaces on turbulent channel flow at different channel heights T2 - Experimentelle Strömungsmechanik : 27. Fachtagung 3.-5. September 2019 Erlangen Y1 - 2019 SN - 978-3-9816764-6-4 SP - 5.1 EP - 5.9 PB - Deutsche Gesellschaft für Laser-Anemometrie - German Association for Laser Anemometry GALA e.V. CY - Karlsruhe ER - TY - GEN A1 - Harlander, Uwe A1 - Le Gal, Patrice A1 - Borcia, Ion-Dan A1 - Le Dizès, Stéphane A1 - Chen, Jun A1 - Favier, Benjamin T1 - The linear instability of the stratified plane Poiseuille flow T2 - 17th European Turbulence Conference, ETC 2019, September 3 - 6, 2019, Torino, Italy Y1 - 2019 UR - http://www.symposium.it/files/eventi/84/etc-2019-561.pdf CY - Turin ER - TY - GEN A1 - Xu, Wenchao A1 - Harlander, Uwe T1 - Mean flow generation in rotating annulus with stochastic methods T2 - 17th European Turbulence Conference, ETC 2019, September 3 - 6, 2019, Torino, Italy Y1 - 2019 UR - http://www.symposium.it/files/eventi/84/etc-2019-561.pdf CY - Turin ER - TY - GEN A1 - Froitzheim, Andreas A1 - Merbold, Sebastian A1 - Ostilla-Mónico, Rodolfo A1 - Egbers, Christoph T1 - Angular momentum transport and flow organization in Taylor-Couette flow at radius ratio of η=0.357" T2 - Physical Review Fluids Y1 - 2019 UR - https://link.aps.org/doi/10.1103/PhysRevFluids.4.084605 U6 - https://doi.org/10.1103/PhysRevFluids.4.084605 VL - 4 ER - TY - THES A1 - Froitzheim, Andreas T1 - Angular momentum transport and pattern formation in medium- and wide-gap turbulent Taylor-Couette flow : an experimental study Y1 - 2019 UR - https://cuvillier.de/de/shop/publications/8095-angular-momentum-transport-and-pattern-formation-in-medium-and-wide-gap-turbulent-taylor-couette-flow SN - 978-3-7369-7073-1 PB - Cuvilier Verlag CY - Göttingen ET - 1. Auflage 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 - 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 - GEN A1 - Ghasemi, Abouzar A1 - Klein, Marten A1 - Will, Andreas A1 - Harlander, Uwe T1 - Mean flow generation by an intermittently unstable boundary layer over a sloping wall T2 - Journal of Fluid Mechanics Y1 - 2018 U6 - https://doi.org/10.1017/jfm.2018.552 SN - 1750-6859 IS - vol. 853 SP - 111 EP - 149 ER - TY - GEN A1 - Zaussinger, Florian A1 - Egbers, Christoph A1 - Travnikov, Vadim A1 - Haun, Peter T1 - Influence of internal heating on convection in the rotating spherical gap T2 - 17th European Turbulence Conference, ETC 2019, September 3 - 6, 2019, Torino, Italy Y1 - 2019 UR - http://www.symposium.it/files/eventi/84/etc-2019-561.pdf CY - Turin ER - TY - GEN A1 - Selvam, Kamal A1 - Öngüner, Emir A1 - Peixinho, Jorge A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Wall pressure in developing turbulent pipe flows T2 - Journal of Fluids Engineering Y1 - 2018 SN - 1528-901X SN - 0098-2202 VL - 140 IS - 8 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 - 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 - GEN A1 - Zaussinger, Florian A1 - Haun, Peter A1 - Neben, Matthias A1 - Seelig, Torsten A1 - Travnikov, Vadim A1 - Egbers, Christoph A1 - Yoshikawa, Harunori A1 - Mutabazi, Innocent T1 - Dielectrically driven convection in spherical gap geometry T2 - Physical Review Fluids Y1 - 2018 U6 - https://doi.org/10.1103/PhysRevFluids.3.093501 SN - 2469-990X VL - 3 IS - 9 SP - 093501-1 EP - 093501-17 ER - TY - GEN A1 - Öngüner, Emir A1 - Dittmar, Mirko A1 - Meyer, Peter A1 - Merbold, Sebastian A1 - Egbers, Christoph ED - Egbers, Christoph T1 - Cross-sectional PIV analysis in turbulent pipe flow at high Reynolds number T2 - Experimentelle Strömungsmechanik, 24. Fachtagung 6.-8. September 2016 Cottbus Y1 - 2016 SN - 978-3-9816764-2-6 SP - S. 31 PB - German Association for Laser Anemometry GALA e.V. CY - Karlsruhe ER - TY - GEN A1 - Meyer, Antoine A1 - Jongmanns, Marcel A1 - Meier, Martin A1 - Egbers, Christoph A1 - Mutabazi, Innocent T1 - Thermal convection in a cylindrical annulus under a combined effect of the radial and vertical gravity T2 - Comptes Rendus Mécanique Y1 - 2016 SN - 1631-0721 VL - 345 IS - 1 SP - 11 EP - 20 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 - CHAP A1 - Futterer, Birgit A1 - Larcher, Thomas von A1 - Egbers, Christoph T1 - Das GeoFlow-Experiment auf der ISS: Interferogrammauswertung für die thermische Konvektion im Kugelspalt Y1 - 2007 ER - TY - GEN A1 - Seelig, Torsten A1 - Harlander, Uwe A1 - Faulwetter, Robin A1 - Egbers, Christoph T1 - Irregularity and singular vector growth of the differentially heated rotating annulus flow Y1 - 2011 ER - TY - GEN A1 - Futterer, Birgit A1 - Koch, Sandy A1 - Egbers, Christoph T1 - Traveling waves in low and intermediate rotating spherical shell convection Y1 - 2011 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 - 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 - 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 - Koch, Sandy A1 - Harlander, Uwe A1 - Egbers, Christoph A1 - Hollerbach, Rainer T1 - Inertial waves in a spherical shell induced by librations of the inner sphere: experimental and numerical results T2 - Fluid Dynamics Research Y1 - 2013 U6 - https://doi.org/10.1088/0169-5983/45/3/035504 SN - 0169-5983 VL - 45 IS - 3 SP - 035504 ER - TY - GEN A1 - Gorenz, Paul A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Investigation of CO2 release pressures in pipeline cracks T2 - Energy Procedia Y1 - 2013 SN - 1876-6102 VL - 40 SP - 285 EP - 293 ER - TY - GEN A1 - Herzog, Nicoleta A1 - Schreiber, Matthias A1 - Egbers, Christoph A1 - Krautz, Hans Joachim T1 - A comparative study of different CFD-codes for numerical simulation of gas-solid fluidized bed hydrodynamics T2 - Computers and Chemical Engineering Y1 - 2012 U6 - https://doi.org/10.1016/j.compchemeng.2011.12.002 SN - 0098-1354 VL - 39 SP - 41 EP - 46 ER - TY - GEN A1 - Merbold, Sebastian A1 - Brauckmann, Hannes A1 - Egbers, Christoph T1 - Torque measurements and numerical determination in differentially rotating wide gap Taylor-Couette flow T2 - Physical Review E Y1 - 2013 U6 - https://doi.org/10.1103/PhysRevE.87.023014 SN - 1550-2376 VL - 87 IS - 2 SP - 023014 -1 EP - 023014 -4 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 - Zanoun, El-Sayed A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - Three measuring techniques for assessing the mean wall skin friction in wall-bounded flows T2 - Thermophysics and Aeromechanics Y1 - 2014 SN - 1531-8699 SN - 0869-8643 VL - 21 IS - 2 SP - 179 EP - 190 ER - TY - GEN A1 - Herzog, Nicoleta A1 - Gorenz, Paul A1 - Egbers, Christoph T1 - CFD modeling of high pressurized CO2 released from onshore pipeline leakages T2 - Environmental Earth Sciences Y1 - 2013 U6 - https://doi.org/10.1007/s12665-013-2536-3 SN - 1866-6299 VL - 80 IS - 8 SP - 3749 EP - 3759 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 - Koch, Sandy A1 - Dahley, Norman A1 - Futterer, Birgit A1 - Egbers, Christoph T1 - Sphärische Wollaston-Schlieren-Interferometrie: Raum-Zeit-Analyse von unter- und überkritischer Konvektion im rotierenden Kugelspalt (GeoFlow-Experiment) Y1 - 2009 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 - 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 -