@misc{ZanounDurstNagib, author = {Zanoun, El-Sayed and Durst, F. and Nagib, H. M.}, title = {Refined Cf relation for turbulent channels and consequences for high Re experiments}, language = {en} } @misc{SchoenBorciaHarlanderetal., author = {Sch{\"o}n, F.-T. and Borcia, I. D. and Harlander, U. and Borcia, R. and Richter, S. and Bestehorn, M.}, title = {Resonant surface waves in an oscillating periodic tank with a submerged hill}, series = {Journal of Fluid Mechanics}, volume = {999 (2024)}, journal = {Journal of Fluid Mechanics}, doi = {10.1017/jfm.2024.885}, pages = {1 -- 18}, language = {en} } @misc{HarlanderSchoenBorciaetal., author = {Harlander, U. and Sch{\"o}n, F.-T. and Borcia, I. D. and Richter, S. and Borcia, R. and Bestehorn, M.}, title = {Resonant water-waves in ducts with different geometries: forced KdV solutions}, series = {European Journal of Mechanics - B/Fluids}, volume = {106}, journal = {European Journal of Mechanics - B/Fluids}, number = {July-August 2024}, issn = {0997-7546}, doi = {10.1016/j.euromechflu.2024.03.008}, pages = {107 -- 115}, language = {en} } @article{ZanounDurstNagib, author = {Zanoun, El-Sayed and Durst, F. and Nagib, H. M.}, title = {Response to "Comment on 'Evaluating the law of the wall in two-dimensional fully developed turbulent channel flows' "}, language = {en} } @misc{ZanounDewidarEgbers, author = {Zanoun, El-Sayed and Dewidar, Yasser and Egbers, Christoph}, title = {Reynolds number dependence of azimuthal and streamwise pipe flow structures}, series = {Journal of Fluid Mechanics}, volume = {Vol. 973}, journal = {Journal of Fluid Mechanics}, issn = {0022-1120}, doi = {10.1017/jfm.2023.700}, pages = {1 -- 36}, language = {en} } @misc{HarlanderWenzelEgbers, author = {Harlander, Uwe and Wenzel, Julia and Egbers, Christoph}, title = {Rotating annulus laboratory experiments with application to baroclinic channel flows with narrows}, language = {en} } @misc{ZaussingerHaunSzaboetal., author = {Zaussinger, Florian and Haun, Peter and Szabo, Peter and Travnikov, Vadim and Al-Kawwas, Mustafa and Egbers, Christoph}, title = {Rotating spherical gap convection in the GeoFlow International Space Station (ISS) experiment}, series = {Physical Review Fluids}, volume = {5}, journal = {Physical Review Fluids}, number = {6}, issn = {2469-990X}, doi = {10.1103/PhysRevFluids.5.063502}, pages = {23}, language = {en} } @incollection{ZanounDurstNagib, author = {Zanoun, El-Sayed and Durst, F. and Nagib, H. M.}, title = {Scaling Laws for Turbulent Channel and Pipe Flows over a Wide Range of Reynolds Number}, language = {de} } @inproceedings{AugensteinLeopoldRichard, author = {Augenstein, Edgar and Leopold, F. and Richard, H.}, title = {Schlieren Techniques in Comparison The Background Oriented Method versus Visualization with Holographic Filters}, language = {en} } @misc{KupkaLoschZaussingeretal., author = {Kupka, Friedrich and Losch, Martin and Zaussinger, Florian and Zweigle, Thomas}, title = {Semi-convection in the ocean and in stars: A multi-scale analysis}, series = {Meteorologische zeitschrift}, volume = {24}, journal = {Meteorologische zeitschrift}, number = {3}, issn = {0941-2948}, doi = {10.1127/metz/2015/0643}, pages = {343 -- 358}, abstract = {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 MetStr{\"o}m 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.}, language = {en} } @misc{ZaussingerKupkaEgbersetal., author = {Zaussinger, Florian and Kupka, Friedrich and Egbers, Christoph and Neben, Matthias and H{\"u}cker, S. and Bahr, C. and Schmitt, M.}, title = {Semi-convective layer formation}, series = {Journal of Physics: Conference Series}, volume = {837}, journal = {Journal of Physics: Conference Series}, number = {1}, doi = {10.1088/1742-6596/837/1/012012}, pages = {7}, language = {en} } @misc{Zaussinger, author = {Zaussinger, Florian}, title = {Semiconvection}, language = {de} } @misc{Zaussinger, author = {Zaussinger, Florian}, title = {Semiconvection}, language = {en} } @misc{FuttererKrebsPlesaetal., author = {Futterer, Birgit and Krebs, Andreas and Plesa, Ana-Catalina and Zaussinger, Florian and Hollerbach, Rainer and Breuer, Doris and Egbers, Christoph}, title = {Sheet-like and plume-like thermal flow in a spherical convection experiment performed under microgravity}, series = {Journal of Fluid Mechanics}, volume = {vol. 735}, journal = {Journal of Fluid Mechanics}, issn = {1750-6859}, doi = {10.1017/jfm.2013.507}, pages = {647 -- 683}, language = {en} } @inproceedings{EgbersZaussinger, author = {Egbers, Christoph and Zaussinger, Florian}, title = {Simulation of geophysical fluid flows in spherical shells: The Geoflow experiments on ISS}, series = {Book of abstracts, School ISTROF 2016, Instabilities and Turbulence in Strato-Rotational Flows, July 11-13th, 2016, Le Havre}, booktitle = {Book of abstracts, School ISTROF 2016, Instabilities and Turbulence in Strato-Rotational Flows, July 11-13th, 2016, Le Havre}, language = {en} } @inproceedings{EgbersHollerbachChossat, author = {Egbers, Christoph and Hollerbach, Rainer and Chossat, P.}, title = {Simulation of geophysical fluid flows under microgravity}, language = {en} } @inproceedings{Egbers, author = {Egbers, Christoph}, title = {Simulation of Geophysical Fluid Flows under Microgravity (GeoFlow): Flow diagnostics and experiment concept for Fluid Science experiments}, series = {Proceedings of 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, 8-11th July 2002}, booktitle = {Proceedings of 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, 8-11th July 2002}, pages = {5}, language = {en} } @misc{SimonYaraslauSzaboetal., author = {Simon, K{\"u}hne and Yaraslau, Sliavin and Szabo, Peter and Carter, R. and Krebs, Andreas and Egbers, Christoph}, title = {Simultaneous particle image velocimetry and background oriented schlieren measurements of convective flows}, series = {Experimentelle Str{\"o}mungsmechanik, Hrsg.: B. Ruck et al.}, journal = {Experimentelle Str{\"o}mungsmechanik, Hrsg.: B. Ruck et al.}, publisher = {German Association for Laser Anemometry 26.8 GALA e.V.}, address = {Karlsruhe}, isbn = {978-3-9816764-4-0}, language = {en} } @misc{SzaboMeyerMeieretal., author = {Szabo, Peter and Meyer, Antoine and Meier, Martin and Motuz, Vasyl and Sliavin, Yaraslau and Egbers, Christoph}, title = {Simultaneous PIV and shadowgraph measurements of thermo-electrohydrodynamic convection in a differentially heated annulus}, series = {Technisches Messen}, volume = {89}, journal = {Technisches Messen}, number = {3}, issn = {2196-7113}, doi = {10.1515/teme-2021-0120}, pages = {148 -- 157}, language = {en} } @misc{HarlanderWenzelWangetal., author = {Harlander, Uwe and Wenzel, Julia and Wang, Yongtai and Alexandrov, Kiril and Egbers, Christoph}, title = {Simultaneous PIV- and thermography-measurements of partially blocked flow in a heated rotating annulus}, language = {en} }