@misc{HarlanderRidderinkhofSchoutenetal., author = {Harlander, Uwe and Ridderinkhof, H. and Schouten, M. W. and Ruijter, W. P. M. de}, title = {Long term observations of transport eddies, and Rossby waves in the Mozambique Channel}, doi = {10.1029/2008JC004846}, language = {en} } @misc{LarcherHarlanderAlexandrovetal., author = {Larcher, Thomas von and Harlander, Uwe and Alexandrov, Kiril and Wang, Yongtai}, title = {Multivariate statistical data analysis methods for detecting baroclinic wave interactions in the thermally driven rotating annulus}, language = {en} } @misc{LarcherHarlanderAlexandrovetal., author = {Larcher, Thomas von and Harlander, Uwe and Alexandrov, Kiril and Wang, Yongtai}, title = {Comparison of velocity and temperature time series data analysis in experiments on the thermally driven rotating annulus}, 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{KochHarlanderEgbers, author = {Koch, Sandy and Harlander, Uwe and Egbers, Christoph}, title = {Wave-attractors and mean flow in a spherical shell due to time-modulated rotation}, language = {en} } @inproceedings{AlexandrovHarlanderEgbers, author = {Alexandrov, Kiril and Harlander, Uwe and Egbers, Christoph}, title = {Definition und Vergleich von Zust{\"a}nden eines rotierenden Zylinderspalts unter Betrachtung skalenseparierter Str{\"o}mungsstrukturen}, language = {de} } @inproceedings{KochHarlanderHollerbachetal., author = {Koch, Sandy and Harlander, Uwe and Hollerbach, Rainer and Rabitti, A. and Maas, L. R. M. and Egbers, Christoph}, title = {Wellen und Wellenattrktoren in einer Kugelschale mit zeitlich modulierter Rotation}, language = {de} } @misc{HarlanderLarcherWangetal., author = {Harlander, Uwe and Larcher, Thomas von and Wang, Yongtai and Egbers, Christoph}, title = {PIV- and LDV-measurements of baroclinic wave interactions in a thermally driven rotating annulus}, doi = {10.1007/s00348-009-0792-5}, language = {en} } @misc{SeeligHarlanderFaulwetteretal., author = {Seelig, Torsten and Harlander, Uwe and Faulwetter, Robin and Egbers, Christoph}, title = {Irregularity and singular vector growth of the differentially heated rotating annulus flow}, 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} } @misc{KochHarlanderHollerbachetal., author = {Koch, Sandy and Harlander, Uwe and Hollerbach, Rainer and Egbers, Christoph}, title = {Laboratory experiments of inertial waves in containers rotating with time modulation}, language = {en} } @misc{HarlanderWangAlexandrovetal., author = {Harlander, Uwe and Wang, Yongtai and Alexandrov, Kiril and Seelig, Torsten and Egbers, Christoph}, title = {Intercomparison of numerical models simulating rotating annulus flows}, language = {en} } @misc{EgbersGellertHarlanderetal., author = {Egbers, Christoph and Gellert, Marcus and Harlander, Uwe and Wang, Yongtai and R{\"u}diger, G{\"u}nther}, title = {Investigation of Stratorotational Instability (SRI) in Taylor-Couette flows with axial temperature gradient}, language = {en} } @misc{HarlanderSeeligFaulwetter, author = {Harlander, Uwe and Seelig, Torsten and Faulwetter, Robin}, title = {Singular vector growth in different flow regimes of the differentially heated rotating annulus}, language = {en} } @misc{KochHarlanderHollerbachetal., author = {Koch, Sandy and Harlander, Uwe and Hollerbach, Rainer and Egbers, Christoph}, title = {Laboratory experiment of inertial wave-interactions in a rotating spherical shell}, language = {en} } @misc{KochHarlanderHollerbachetal., author = {Koch, Sandy and Harlander, Uwe and Hollerbach, Rainer and Egbers, Christoph}, title = {Laboratory experiments and numerical simulations of inertial wave-interactions in a rotating spherical shell}, language = {en} } @inproceedings{BorciaHarlander, author = {Borcia, Ion-Dan and Harlander, Uwe}, title = {Inertial waves inside a liquid confined between two rotating coaxial cylinders: the case of small Ekman number}, language = {en} } @inproceedings{BorciaSeeligHarlanderetal., author = {Borcia, Ion-Dan and Seelig, Torsten and Harlander, Uwe and Egbers, Christoph}, title = {Inertial waves in rotating cylindrical geometry: mean flow interactions and attractors}, language = {en} } @inproceedings{AlexandrovHarlanderEgbers, author = {Alexandrov, Kiril and Harlander, Uwe and Egbers, Christoph}, title = {Spatial spectra of regular and irregular rotating annulus flows: Statistical scale classification in terms of empirical orthogonal functions}, language = {en} } @inproceedings{KochHarlanderHollerbachetal., author = {Koch, Sandy and Harlander, Uwe and Hollerbach, Rainer and Egbers, Christoph}, title = {Laboratory experiment and numerical simulations of inertial wave interactions in a rotating spherical shell}, language = {en} } @inproceedings{HarlanderAlexandrovWangetal., author = {Harlander, Uwe and Alexandrov, Kiril and Wang, Yongtai and Seelig, Torsten and Egbers, Christoph}, title = {The differentially heated rotating annulus as a laboratory analog of baroclinic instability and the atmospheric circulation}, language = {en} } @inproceedings{Harlander, author = {Harlander, Uwe}, title = {The differentially heated annulus as a laboratory analog of baroclinic instability and the atmospheric circulation}, language = {en} } @inproceedings{HarlanderMaas, author = {Harlander, Uwe and Maas, L. R. M.}, title = {Tide-topography interactions?}, language = {en} } @inproceedings{SeeligHarlanderFaulwetteretal., author = {Seelig, Torsten and Harlander, Uwe and Faulwetter, Robin and Egbers, Christoph}, title = {Irregular and singular vector growth in the differentially heated rotating annulus}, language = {en} } @inproceedings{SeeligHarlanderFaulwetteretal., author = {Seelig, Torsten and Harlander, Uwe and Faulwetter, Robin and Egbers, Christoph}, title = {Irregular and singular vector growth in the differentially heated rotating annulus}, language = {en} } @inproceedings{LarcherHarlanderEgbers, author = {Larcher, Thomas von and Harlander, Uwe and Egbers, Christoph}, title = {Multivariate statistical data analysis methods for detecting baroclinic wave interactions in the thermally driven rotating annulus}, language = {en} } @misc{HarlanderWenzelAlexandrovetal., author = {Harlander, Uwe and Wenzel, Julia and Alexandrov, Kiril and Wang, Yongtai and Egbers, Christoph}, title = {Simultaneous PIV- and thermography-measurements of partially blocked flow in a heated rotating annulus}, series = {Experiments in Fluids}, volume = {52}, journal = {Experiments in Fluids}, number = {4}, issn = {1432-1114}, doi = {10.1007/s00348-011-1195-y}, pages = {1077 -- 1087}, language = {de} } @inproceedings{HarlanderWrightEgbers, author = {Harlander, Uwe and Wright, G. B. and Egbers, Christoph}, title = {Reconstruction of the 3D flow field in a differentially heated rotating annulus by synchronized particle image velocimetry and infrared thermography measurements}, series = {16th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, 09-12 July, Proceedings, Calouste Gulbenkian Foundation, Lisbon, Portugal}, booktitle = {16th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, 09-12 July, Proceedings, Calouste Gulbenkian Foundation, Lisbon, Portugal}, language = {en} } @inproceedings{SeeligHarlanderBorciaetal., author = {Seelig, Torsten and Harlander, Uwe and Borcia, Ion-Dan and Egbers, Christoph}, title = {Zonal mean flow excitation due to inertial waves propagating in the meridional plane}, series = {European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April}, booktitle = {European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April}, language = {en} } @inproceedings{HarlanderWrightEgbers, author = {Harlander, Uwe and Wright, G. B. and Egbers, Christoph}, title = {Reconstruction of the 3D flow field in a differentially heated rotating annulus laboratory experiment}, series = {European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April}, booktitle = {European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April}, language = {en} } @inproceedings{KochHarlanderHollerbachetal., author = {Koch, Sandy and Harlander, Uwe and Hollerbach, Rainer and Egbers, Christoph}, title = {Inertial waves in a rotating spherical shell: Comparison between numerical simulations and laboratory experiments}, series = {European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April}, booktitle = {European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April}, language = {en} } @inproceedings{BorciaHarlanderSeeligetal., author = {Borcia, Ion-Dan and Harlander, Uwe and Seelig, Torsten and Egbers, Christoph}, title = {Comparing attractor frequency bands with eigen frequencies for a confined rotating fluid}, series = {European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April}, booktitle = {European Geosciences Union (EGU), 9th General Assembly, Vienna, Austria, 22-27 April}, language = {en} } @inproceedings{BorciaHarlanderSeeligetal., author = {Borcia, Ion-Dan and Harlander, Uwe and Seelig, Torsten and Egbers, Christoph}, title = {Comparing the spectrum of wave attractor frequency bands and the eigenspectrum of fluid in a rotating annulus with inclined inner cylinder}, series = {Book of abstracts, 9th European Fluid Mechanics Conference (EFMC), 9-13 September, Rome, Italy}, booktitle = {Book of abstracts, 9th European Fluid Mechanics Conference (EFMC), 9-13 September, Rome, Italy}, language = {en} } @inproceedings{SeeligHarlanderBorciaetal., author = {Seelig, Torsten and Harlander, Uwe and Borcia, Ion-Dan and Scurtu, Nicoleta and Egbers, Christoph and Klein, Marten and Ghasemi, Abouzar and Will, Andreas and Schaller, Eberhard}, title = {Inertial waves in rotating cylindrical annulus: theory, experiment and simulations}, series = {Book of abstracts, 9th European Fluid Mechanics Conference (EFMC), 9-13 September, Rome, Italy}, booktitle = {Book of abstracts, 9th European Fluid Mechanics Conference (EFMC), 9-13 September, Rome, Italy}, language = {en} } @inproceedings{HarlanderHoffSeeligetal., author = {Harlander, Uwe and Hoff, Michael and Seelig, Torsten and Egbers, Christoph}, title = {Empirical singular vectors of baroclinic flows deduced from experimental data}, series = {European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 - 12 April 2013}, booktitle = {European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 - 12 April 2013}, language = {en} } @inproceedings{KochHarlanderHollerbachetal., author = {Koch, Sandy and Harlander, Uwe and Hollerbach, Rainer and Egbers, Christoph}, title = {Inertial waves in a spherical shell induced by librations of the inner sphere: experimental and numerical results}, series = {European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 - 12 April 2013}, booktitle = {European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 - 12 April 2013}, language = {en} } @inproceedings{SeeligBorciaKleinetal., author = {Seelig, Torsten and Borcia, Ion-Dan and Klein, Marten and Ghasemi, Abouzar and Will, Andreas and Egbers, Christoph and Schaller, Eberhard and Harlander, Uwe}, title = {Inertial waves and wave attractors in a rotating annulus with inner or outer cylinder libration}, series = {European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 - 12 April 2013}, booktitle = {European Geosciences Union (EGU), 10th General Assembly, Vienna, Austria, 07 - 12 April 2013}, language = {en} } @inproceedings{VinczeHarlanderLarcheretal., author = {Vincze, Miklos and Harlander, Uwe and Larcher, Thomas von and Egbers, Christoph}, title = {An experimental study of baroclinic wave transitions in a differentially heated rotating annulus with sloping bottom topography}, series = {European Turbulence Conference 14 (ETC), 1-4 September 2013, ENS Lyon, France}, booktitle = {European Turbulence Conference 14 (ETC), 1-4 September 2013, ENS Lyon, France}, pages = {2}, language = {en} } @misc{KochHarlanderEgbersetal., author = {Koch, Sandy and Harlander, Uwe and Egbers, Christoph and Hollerbach, Rainer}, title = {Inertial waves in a spherical shell induced by librations of the inner sphere: experimental and numerical results}, series = {Fluid Dynamics Research}, volume = {45}, journal = {Fluid Dynamics Research}, number = {3}, issn = {0169-5983}, doi = {10.1088/0169-5983/45/3/035504}, pages = {035504}, language = {en} } @misc{BorciaHarlander, author = {Borcia, Ion-Dan and Harlander, Uwe}, title = {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}, series = {Theoretical and Computational Fluid Dynamics}, volume = {27}, journal = {Theoretical and Computational Fluid Dynamics}, number = {3-4}, issn = {1432-2250}, doi = {10.1007/s00162-012-0278-6}, pages = {397 -- 413}, language = {en} } @inproceedings{VinczeHarlanderEgbers, author = {Vincze, Miklos and Harlander, Uwe and Egbers, Christoph}, title = {An experimental study on the co-existence of topographic waves and baroclinic instability in a differentially heated rotating annulus}, series = {18. International Coyette-Taylor Workshop, University of Twente, Enschede The Netherlands, 24. - 26. june 2013}, booktitle = {18. International Coyette-Taylor Workshop, University of Twente, Enschede The Netherlands, 24. - 26. june 2013}, address = {Enschede}, pages = {S. 67}, language = {en} } @misc{VinczeHarlanderLarcheretal., author = {Vincze, Miklos and Harlander, Uwe and Larcher, Thomas von and Egbers, Christoph}, title = {An experimental study of regime transitions in a differentially heated baroclinic annulus with flat and sloping bottom topographies}, series = {Nonlinear Processes in Geophysics}, volume = {21}, journal = {Nonlinear Processes in Geophysics}, number = {1}, issn = {1607-7946}, doi = {10.5194/npg-21-237-2014}, pages = {237 -- 250}, language = {en} } @misc{KleinSeeligKurganskyetal., author = {Klein, Marten and Seelig, Torsten and Kurgansky, Michael V. and Ghasemi, Abouzar and Borcia, Ion-Dan and Will, Andreas and Schaller, Eberhard and Egbers, Christoph and Harlander, Uwe}, title = {Inertial wave excitation and focusing in a liquid bounded by a frustum and a cylinder}, series = {Journal of Fluid Mechanics}, journal = {Journal of Fluid Mechanics}, number = {vol. 751}, issn = {1750-6859}, doi = {10.1017/jfm.2014.304}, pages = {255 -- 297}, abstract = {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 Poincar{\´e} 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.}, language = {en} } @misc{HoffHarlanderEgbers, author = {Hoff, Michael and Harlander, Uwe and Egbers, Christoph}, title = {Empirical singular vectors of baroclinic flows deduced from experimental data of a differentially heated rotating annulus}, series = {Meteorologische Zeitschrift}, volume = {23}, journal = {Meteorologische Zeitschrift}, number = {6}, doi = {10.1127/metz/2014/0563}, pages = {581 -- 597}, language = {en} } @incollection{HarlanderLarcherWrightetal., author = {Harlander, Uwe and Larcher, Thomas von and Wright, G. B. and Hoff, Michael and Alexandrov, Kiril and Egbers, Christoph}, title = {Orthogonal decomposition methods to analyze PIV, LDV and thermography data of a thermally driven rotating annulus laboratory experiment}, series = {Modeling Atmospheric and Oceanic Flows: Insights from Laboratory Experiments and Numerical Simulations}, booktitle = {Modeling Atmospheric and Oceanic Flows: Insights from Laboratory Experiments and Numerical Simulations}, editor = {Larcher, Thomas von and Williams, Paul D.}, publisher = {Wiley}, address = {Hoboken}, isbn = {978-1-118-85593-5}, doi = {10.1002/9781118856024}, pages = {315 -- 336}, language = {en} } @misc{VinczeBorchertAchatzetal., author = {Vincze, Miklos and Borchert, Sebastian and Achatz, Ulrich and Larcher, Thomas von and Baumann, Martin and Liersch, Claudia and Remmler, Sebastian and Beck, Teresa and Alexandrov, Kiril and Egbers, Christoph and Fr{\"o}hlich, Jochen and Heuveline, Vincent and Hickel, Stefan and Harlander, Uwe}, title = {Benchmarking in a rotating annulus: a comparative experimental and numerical study of baroclinic wave dynamics}, series = {Meteorologische Zeitschrift}, volume = {23}, journal = {Meteorologische Zeitschrift}, number = {6}, issn = {1610-1227}, doi = {10.1127/metz/2014/0600}, pages = {611 -- 635}, language = {en} } @misc{SeeligKielczewskiTuliszkaSznitkoetal., author = {Seelig, Torsten and Kielczewski, Kamil and Tuliszka-Sznitko, Ewa M. and Harlander, Uwe and Egbers, Christoph and Bontoux, Patrick}, title = {Taylor-Couette flow with asymmetric end-walls boundary conditions}, series = {15th European turbulence conference (ETC), Delft, The Netherlands (2015)}, journal = {15th European turbulence conference (ETC), Delft, The Netherlands (2015)}, language = {en} } @inproceedings{KleinGhasemiSeeligetal., author = {Klein, Marten and Ghasemi, Abouzar and Seelig, Torsten and Borcia, Ion-Dan and Harlander, Uwe and Will, Andreas}, title = {DNS of inertial wave attractors in a librating annulus with height-dependent gap width}, series = {15th European turbulence conference (ETC), Delft, The Netherlands (2015)}, booktitle = {15th European turbulence conference (ETC), Delft, The Netherlands (2015)}, abstract = {Direct numerical simulations (DNS) of inertial wave attractors have been carried out in a librating Taylor-Couette system with broken mirror symmetry in the radial-axial cross-section. The inertial wave excitation mechanism and its localisation at the edges was clarified by applying boundary layer theory. Additional resonance peaks in the simulated response spectra were found to agree with low-order wave attractors obtained by geometric ray tracing. Numerics and theory are in qualitative agreement with recent lab experiments.}, language = {en} } @inproceedings{SeeligGhasemiKurganskyetal., author = {Seelig, Torsten and Ghasemi, Abouzar and Kurgansky, Michael V. and Klein, Marten and Will, Andreas and Harlander, Uwe}, title = {Mean flow generation due to longitudinal librations of sidewalls of a rotating annulus}, series = {15th European turbulence conference (ETC), Delft, The Netherlands (2015)}, booktitle = {15th European turbulence conference (ETC), Delft, The Netherlands (2015)}, language = {en} } @inproceedings{HoffHarlanderJahangiretal., author = {Hoff, Michael and Harlander, Uwe and Jahangir, Saad and Egbers, Christoph}, title = {Experimental study of inertial waves in a spherical shell induced by librations of the inner sphere}, series = {European Geosciences Union, General Assembly 2015, Vienna, Austria, 13 April - 17 May 2015}, booktitle = {European Geosciences Union, General Assembly 2015, Vienna, Austria, 13 April - 17 May 2015}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, language = {en} } @inproceedings{HoffHarlanderEgbers, author = {Hoff, Michael and Harlander, Uwe and Egbers, Christoph}, title = {Experimental study of the fluid flow in a spherical shell induced by librations of the inner sphere: linear and non-linear features}, series = {ICTW 19, Book of Abstractc, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany}, booktitle = {ICTW 19, Book of Abstractc, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany}, address = {Cottbus}, pages = {86 -- 87}, language = {en} }