@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} } @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{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{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} } @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} } @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{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} } @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{SeeligHarlander, author = {Seelig, Torsten and Harlander, Uwe}, title = {Can zonally symmetric inertial waves drive an oscillating zonal mean flow?}, series = {Geophysical \& Astrophysical Fluid Dynamics}, volume = {109}, journal = {Geophysical \& Astrophysical Fluid Dynamics}, number = {6}, issn = {1029-0419}, doi = {10.1080/03091929.2015.1094064}, pages = {541 -- 566}, language = {en} } @misc{HoffHarlanderEgbers, author = {Hoff, Michael and Harlander, Uwe and Egbers, Christoph}, title = {Experimental survey of linear and nonlinear inertial waves and wave instabilities in a spherical shell}, series = {Journal of Fluid Mechanics}, journal = {Journal of Fluid Mechanics}, number = {vol. 789}, issn = {1750-6859}, doi = {10.1017/jfm.2015.743}, pages = {589 -- 616}, language = {en} }