TY - CHAP A1 - Koch, Sandy A1 - Harlander, Uwe A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - Laboratory experiment and numerical simulations of inertial wave interactions in a rotating spherical shell Y1 - 2011 ER - TY - CHAP A1 - Harlander, Uwe A1 - Alexandrov, Kiril A1 - Wang, Yongtai A1 - Seelig, Torsten A1 - Egbers, Christoph T1 - The differentially heated rotating annulus as a laboratory analog of baroclinic instability and the atmospheric circulation Y1 - 2011 ER - TY - CHAP A1 - Harlander, Uwe T1 - The differentially heated annulus as a laboratory analog of baroclinic instability and the atmospheric circulation Y1 - 2011 ER - TY - CHAP A1 - Egbers, Christoph T1 - First results from large pipe test facility at BTU Cottbus Y1 - 2011 ER - TY - CHAP A1 - Borcia, Ion-Dan T1 - Attractors, eigenvalues and mean flow interactions in a fluid confined between two co-rotating cylinders Y1 - 2011 ER - TY - CHAP A1 - Harlander, Uwe A1 - Maas, L. R. M. T1 - Tide-topography interactions? Y1 - 2011 ER - TY - CHAP A1 - Seelig, Torsten A1 - Harlander, Uwe A1 - Faulwetter, Robin A1 - Egbers, Christoph T1 - Irregular and singular vector growth in the differentially heated rotating annulus Y1 - 2011 UR - http://www.mpia-hd.mpg.de/Baroclinic2011/T12.php ER - TY - CHAP A1 - Seelig, Torsten A1 - Harlander, Uwe A1 - Faulwetter, Robin A1 - Egbers, Christoph T1 - Irregular and singular vector growth in the differentially heated rotating annulus Y1 - 2011 ER - TY - CHAP A1 - Crumeyrolle, Olivier A1 - Smieszek, Marlene A1 - Mutabazi, Innocent A1 - Egbers, Christoph T1 - Dielectrophoretic instabilities in annular configurations Y1 - 2011 ER - TY - GEN A1 - Zaussinger, Florian T1 - Semiconvection Y1 - 2011 ER - TY - CHAP A1 - Christl, Andreas A1 - Gorenz, Paul A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Eccentric Taylor-Couette Flow with orbital motion of the inner cylinder Y1 - 2011 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 - GEN A1 - Harlander, Uwe A1 - Wenzel, Julia A1 - Alexandrov, Kiril A1 - Wang, Yongtai A1 - Egbers, Christoph T1 - Simultaneous PIV- and thermography-measurements of partially blocked flow in a heated rotating annulus T2 - Experiments in Fluids Y1 - 2012 U6 - https://doi.org/10.1007/s00348-011-1195-y SN - 1432-1114 VL - 52 IS - 4 SP - 1077 EP - 1087 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 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Analysis of differentially rotating turbulent Taylor-Couette-flow using Laser Doppler-Anemometry and comparison with torque 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/upload/168_paper_spkupl.pdf 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 - Motuz, Vasyl A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - Turbulente Grenzschichtströmung an einer gleichmäßig perforierten Wand mit Mikro-Ausblasen T2 - Lasermethoden in der Strömungsmesstechnik, 20. Fachtagung, 04. - 06. September 2012, Rostock Y1 - 2012 SN - 978-3-9805613-8-9 PB - GALA CY - Karlsruhe ER - TY - CHAP A1 - Butt, Usman A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - Investigation of flow over bluff bodies with patterned surface using Laser-Doppler Anemometry T2 - Lasermethoden in der Strömungsmesstechnik, 20. Fachtagung, 04. - 06. September 2012, Rostock Y1 - 2012 SN - 978-3-9805613-8-9 PB - GALA CY - Karlsruhe ER - TY - CHAP A1 - Seelig, Torsten A1 - Harlander, Uwe A1 - Borcia, Ion-Dan A1 - Egbers, Christoph T1 - Zonal mean flow excitation due to inertial waves propagating in the meridional plane T2 - European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April Y1 - 2012 UR - http://meetingorganizer.copernicus.org/EGU2012/EGU2012-4981-1.pdf N1 - EGU2012-4981-1 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 - 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 - TY - CHAP A1 - Borcia, Ion-Dan A1 - Harlander, Uwe A1 - Seelig, Torsten A1 - Egbers, Christoph T1 - Comparing attractor frequency bands with eigen frequencies for a confined rotating fluid T2 - European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April Y1 - 2012 UR - http://meetingorganizer.copernicus.org/EGU2012/EGU2012-10411.pdf N1 - EGU2012-10411 ER - TY - CHAP A1 - Borcia, Ion-Dan A1 - Harlander, Uwe A1 - Seelig, Torsten A1 - Egbers, Christoph T1 - Comparing the spectrum of wave attractor frequency bands and the eigenspectrum of fluid in a rotating annulus with inclined inner cylinder 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 - Seelig, Torsten A1 - Harlander, Uwe A1 - Borcia, Ion-Dan A1 - Scurtu, Nicoleta A1 - Egbers, Christoph A1 - Klein, Marten A1 - Ghasemi, Abouzar A1 - Will, Andreas A1 - Schaller, Eberhard T1 - Inertial waves in rotating cylindrical annulus: theory, experiment and simulations 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 - 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 - CHAP A1 - Koch, Sandy A1 - Harlander, Uwe A1 - Hollerbach, Rainer A1 - Egbers, Christoph T1 - Inertial waves in a spherical shell induced by librations of the inner sphere: experimental and numerical results T2 - European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 – 12 April 2013 Y1 - 2013 UR - http://meetingorganizer.copernicus.org/EGU2013/EGU2013-4637.pdf N1 - EGU2013-4637 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 - 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 - Gorenz, Paul A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Investigation of CO2 release pressures in pipeline cracks T2 - European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 – 12 April 2013 Y1 - 2013 UR - http://meetingorganizer.copernicus.org/EGU2013/EGU2013-5816-1.pdf N1 - EGU2013-5816 ER - TY - CHAP A1 - Shahirpour, Amir A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Towards CFD modeling of turbulent pipeline material transportation T2 - European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 – 12 April 2013 Y1 - 2013 UR - http://meetingorganizer.copernicus.org/EGU2013/EGU2013-5893.pdf N1 - EGU2013-5893 ER - TY - CHAP A1 - Vincze, Miklos A1 - Harlander, Uwe A1 - Larcher, Thomas von A1 - Egbers, Christoph T1 - An experimental study of baroclinic wave transitions in a differentially heated rotating annulus with sloping bottom topography T2 - European Turbulence Conference 14 (ETC), 1-4 September 2013, ENS Lyon, France Y1 - 2013 UR - http://etc14.ens-lyon.fr/etc-14-proceedings/accepted-talks/ 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 - 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 - 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 - 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 - 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 - Butt, Usman A1 - Egbers, Christoph T1 - Aerodynamic Characteristics of Flow over Circular Cylinders with Patterned Surface T2 - International Journal of Materials, Mechanics and Manufacturing Y1 - 2013 UR - http://www.ijmmm.org/papers/027-TT002.pdf VL - 1 IS - 2 SP - 121 EP - 124 ER - TY - CHAP A1 - Nobis, Matthias A1 - Reinke, Peter A1 - Schmidt, Marcus A1 - Redlich, Marcel A1 - Egbers, Christoph A1 - Herzog, Nicoleta A1 - Gorenz, Paul A1 - Christl, Andreas T1 - Untersuchung der instationären Gleitlagerströmung T2 - 21. GALA-Tagung 2013, Lasermethoden in der Strömungsmesstechnik, 03. - 05. September 2013, München Y1 - 2013 SN - 978-3-9805613-9-6 SP - 51.1 EP - 51.10 PB - Dt. Gesellschaft für Laser-Anemometrie CY - Karlsruhe 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 - 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 - Vincze, Miklos A1 - Harlander, Uwe A1 - Egbers, Christoph T1 - An experimental study on the co-existence of topographic waves and baroclinic instability in a differentially heated rotating annulus T2 - 18. International Coyette-Taylor Workshop, University of Twente, Enschede The Netherlands, 24. - 26. june 2013 Y1 - 2013 SP - S. 67 CY - Enschede 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 - Borcia, Rodica A1 - Bestehorn, Michael A1 - Egbers, Christoph T1 - Surface effects at the mixing of two perfectly miscible components in a thin liquid film T2 - International Topical Team Workshop on Two-Phase Systems for Ground and Space Applications, ITTW 2013 Y1 - 2013 UR - http://www.zarm.uni-bremen.de/ITTW2013/abstracts/ITTW2013_Book-of-Abstracts.pdf ER - TY - CHAP A1 - Borcia, Ion-Dan A1 - Borcia, Rodica A1 - Bestehorn, Michael A1 - Egbers, Christoph T1 - Drops on cylindrical wires T2 - International Topical Team Workshop on Two-Phase Systems for Ground and Space Applications, ITTW 2013 Y1 - 2013 UR - http://www.zarm.uni-bremen.de/ITTW2013/abstracts/ITTW2013_Book-of-Abstracts.pdf ER - TY - GEN A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Atmospheric dispersion of CO2 released from pipeline leakages T2 - Energy Procedia Y1 - 2013 SN - 1876-6102 VL - 40 SP - 232 EP - 239 ER - TY - GEN A1 - Vincze, Miklos A1 - Harlander, Uwe A1 - Larcher, Thomas von A1 - Egbers, Christoph T1 - An experimental study of regime transitions in a differentially heated baroclinic annulus with flat and sloping bottom topographies T2 - Nonlinear Processes in Geophysics Y1 - 2014 U6 - https://doi.org/10.5194/npg-21-237-2014 SN - 1607-7946 VL - 21 IS - 1 SP - 237 EP - 250 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 - GEN A1 - König, Franziska A1 - Zanoun, El-Sayed A1 - Öngüner, Emir A1 - Egbers, Christoph T1 - The CoLaPipe - The new Cottbus large pipe test facility at Brandenburg University of Technology Cottbus-Senftenberg T2 - Review of scientific instruments Y1 - 2014 U6 - https://doi.org/10.1063/1.4884717 SN - 1089-7623 VL - 85 IS - 7 SP - 075115-1 EP - 075115-9 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 -