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 - CHAP A1 - Martinez-Arias, Borja A1 - Peixinho, Jorge A1 - Froitzheim, Andreas A1 - Merbold, Sebastian A1 - Egbers, Christoph A1 - Mutabazi, Innocent T1 - Influence of the radius ratio on the torque in turbulent Taylor-Couette flow T2 - ICTW 19, Book of Abstracts, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany Y1 - 2015 SP - 30 EP - 31 CY - Cottbus ER - TY - CHAP A1 - Froitzheim, Andreas A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Wide gap Taylor-Couette flow T2 - ICTW 19, Book of Abstracts, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany Y1 - 2015 SP - 28 EP - 29 CY - Cottbus ER - TY - CHAP A1 - Merbold, Sebastian A1 - Froitzheim, Andreas A1 - Egbers, Christoph T1 - Turbulent Taylor-Couette flow for very wide gaps T2 - ICTW 19, Book of Abstracts, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany Y1 - 2015 SP - 26 EP - 27 CY - Cottbus ER - TY - CHAP A1 - Froitzheim, Andreas A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Torque measurements and flow visualization in a wide gap Taylor-Couette Flow T2 - 15th European turbulence conference (ETC), Delft, The Netherlands (2015) Y1 - 2015 UR - http://www.etc15.nl/proceedings/proceedings/documents/262.pdf 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 - 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 - Futterer, Birgit A1 - Dahley, Norman A1 - Egbers, Christoph T1 - Thermal electro-hydrodynamic heat transfer augmentation in vertical annuli by the use of dielectrophoretic forces through a.c. electric field T2 - International Journal of Heat and Mass Transfer Y1 - 2016 SN - 0017-9310 VL - 93 SP - 144 EP - 154 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 - 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 - CHAP A1 - Zaussinger, Florian A1 - Krebs, Andreas A1 - Breuer, Doris A1 - Plesa, Ana-Catalina A1 - Egbers, Christoph T1 - Convection in the spherical gap with high viscosity contrasts T2 - ICTW 19, Book of Abstracts, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany Y1 - 2015 SP - 88 EP - 89 CY - Cottbus ER - TY - CHAP A1 - Zaussinger, Florian A1 - Christl, Andreas A1 - Gorenz, Paul A1 - Neben, Matthias A1 - Egbers, Christoph T1 - An applied Couette-Taylor system as a simplified bearing model T2 - Book of abstracts, ICTW 19, 19th International Couette-Taylor Workshop, June 24-26, 2015 Cottbus, Germany Y1 - 2015 SP - 170 EP - 171 PB - BTU CY - Cottbus ER - TY - GEN A1 - Ghasemi, Abouzar A1 - Klein, Marten A1 - Harlander, Uwe A1 - Kurgansky, Michael V. A1 - Schaller, Eberhard A1 - Will, Andreas T1 - Mean flow generation by Görtler vortices in a rotating annulus with librating side walls T2 - Physics of Fluids N2 - Time periodic variation of the rotation rate of an annulus induces in supercritical regime an unstable Stokes boundary layer over the cylinder side walls, generating Görtler vortices in a portion of a libration cycle as a discrete event. Numerical results show that these vortices propagate into the fluid bulk and generate an azimuthal mean flow. Direct numerical simulations of the fluid flow in an annular container with librating outer (inner) cylinder side wall and Reynolds-averaged Navier–Stokes (RANS) equations as diagnostic equations are used to investigate generation mechanism of the retrograde (prograde) azimuthal mean flow in the bulk. First, we explain, phenomenologically, how absolute angular momentum of the bulk flow is mixed and changed due to the propagation of the Görtler vortices, causing a new vortex of basin size. Then we investigate the RANS equations for intermediate time scale of the development of the Görtler vortices and for long time scale of the order of several libration periods. The former exhibits sign selection of the azimuthal mean flow. Investigating the latter, we predict that the azimuthal mean flow is proportional to the libration amplitude squared and to the inverse square root of the Ekman number and libration frequency and then confirms this using the numerical data. Additionally, presence of an upscale cascade of energy is shown, using the kinetic energy budget of fluctuating flow. KW - Direct Numerical Simulation KW - Fluid Mechanics KW - Mean Flow KW - Rotation KW - Cylinder KW - Centrifugal KW - Instability KW - Mechanism KW - Vortex Y1 - 2016 U6 - https://doi.org/10.1063/1.4948406 VL - 28 IS - 056603 SP - 1 EP - 23 ER - TY - GEN A1 - Vincze, Miklós A1 - Borcia, Ion-Dan A1 - Harlander, Uwe T1 - Temperature fluctuations in a changing climate: an ensemble-based experimental approach T2 - Scientific Reports Y1 - 2017 U6 - https://doi.org/10.1038/s41598-017-00319-0 SN - 2045-2322 VL - 7 SP - 254 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 - Borcia, Rodica A1 - Borcia, Ion-Dan A1 - Helbig, Markus A1 - Meier, Martin A1 - Egbers, Christoph A1 - Bestehorn, Michael T1 - Dancing drops over vibrating substrates T2 - The European Physical Journal Special Topics KW - Thin Film Instabilities Y1 - 2017 UR - https://link.springer.com/article/10.1140/epjst/e2016-60202-6 U6 - https://doi.org/10.1140/epjst/e2016-60202-6 SN - 1951-6355 SN - 1951-6401 VL - 226 IS - 6 SP - 1297 EP - 1306 ER - TY - CHAP A1 - Öngüner, Emir A1 - Zanoun, El-Sayed A1 - Egbers, Christoph ED - Örlü, Ramis ED - Talamelli, Alessandro ED - Peinke, Joachim ED - Oberlack, Martin T1 - Streamwise Auto-Correlation Analysis in Turbulent Pipe Flow Using Particle Image Velocimetry at High Reynolds Numbers T2 - Progress in Turbulence VII, Proceedings of the iTi Conference in Turbulence 2016 Y1 - 2017 UR - https://link.springer.com/chapter/10.1007/978-3-319-57934-4_16 SN - 978-3-319-57933-7 SP - 107 EP - 112 PB - Springer CY - Cham ER - TY - CHAP A1 - Öngüner, Emir A1 - Zanoun, El-Sayed A1 - Fiorini, Tommaso A1 - Bellani, Gabriele A1 - Shahirpour, Amir A1 - Egbers, Christoph A1 - Talamelli, Alessandro ED - Örlü, Ramis ED - Talamelli, Alessandro ED - Peinke, Joachim ED - Oberlack, Martin T1 - Wavenumber Dependence of Very Large-Scale Motions in CICLoPE at 4800 ≤ Reτ ≤ 37.000 T2 - Progress in Turbulence VII, Proceedings of the iTi Conference in Turbulence 2016 Y1 - 2017 UR - https://link.springer.com/chapter/10.1007/978-3-319-57934-4_15 SN - 978-3-319-57933-7 SP - 101 EP - 106 PB - Springer CY - Cham ER - TY - CHAP A1 - Larcher, Thomas von A1 - Viazzo, Stephane A1 - Randriamampianina, Anthony A1 - Harlander, Uwe T1 - Small-scale flow patterns at the vertical sidewalls of the thermally driven rotating annulus T2 - European Geosciences Union General Assembly 2017 Vienna, Austria, 23–28 April 2017 Y1 - 2017 UR - http://meetingorganizer.copernicus.org/EGU2017/EGU2017-4351.pdf N1 - EGU2017-4351 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Rodda, Costanza A1 - Borcia, Ion-Dan A1 - Harlander, Uwe T1 - Baroclinic wave laboratory experiment with radial heating and vertical stratification to study IGW emission from baroclinic fronts T2 - European Geosciences Union General Assembly 2017 Vienna, Austria, 23–28 April 2017 Y1 - 2017 UR - http://meetingorganizer.copernicus.org/EGU2017/EGU2017-3676.pdf N1 - EGU2017-3676 PB - European Geophysical Society CY - Katlenburg-Lindau ER -