@article{SitteBraschJunketal., author = {Sitte, B. and Brasch, W. and Junk, M. and Travnikov, Vadim and Egbers, Christoph}, title = {Thermal flow in a rotating spherical gap with a dielectrophoretic central force field}, language = {en} } @incollection{TravnikovEgbersHollerbach, author = {Travnikov, Vadim and Egbers, Christoph and Hollerbach, Rainer}, title = {Thermische Konvektion im Kugelspalt unter radialem Kraftfeld: Dreidimensionale St{\"o}mung}, language = {de} } @misc{MeyerMeierMotuzetal., author = {Meyer, Antoine and Meier, Martin and Motuz, Vasyl and Egbers, Christoph}, title = {Thermo-electric convection in a cylindrical annulus during a sounding rocket flight}, series = {Journal of Fluid Mechanics}, volume = {972}, journal = {Journal of Fluid Mechanics}, number = {A26}, issn = {0022-1120}, doi = {10.1017/jfm.2023.677}, language = {en} } @misc{MeyerSeeligMeieretal., author = {Meyer, Antoine and Seelig, Torsten and Meier, Martin and Mutabazi, Innocent and Egbers, Christoph}, title = {Thermo-electro-hydrodynamic instability of a dielectric fluid in a vertical cylindrical annulus: Earth's gravity and weightless conditions}, series = {26th European Low Gravity Research Association Biennial Symposium and General Assembly, Granada (Spanien), September 24-27, 2019}, journal = {26th European Low Gravity Research Association Biennial Symposium and General Assembly, Granada (Spanien), September 24-27, 2019}, pages = {115 -- 116}, language = {en} } @misc{MeyerSeeligGerstneretal., author = {Meyer, Antoine and Seelig, Torsten and Gerstner, Philipp and Kang, Changwoo and Meier, Martin and Jongmanns, Marcel and Baumann, Martin and Mutabazi, Innocent and Heuveline, Vincent and Egbers, Christoph}, title = {Thermo-electro-hydrodynamic instability of a dielectric fluid in a vertical cylindrical annulus: Earth's gravity and weightless conditions}, series = {LIA-ISTROF workshop 2019 Instabilities and Turbulence in Stratified Rotational Flows Cottbus, 19th-20th June 2019 Brandenburg}, journal = {LIA-ISTROF workshop 2019 Instabilities and Turbulence in Stratified Rotational Flows Cottbus, 19th-20th June 2019 Brandenburg}, address = {Cottbus}, pages = {1}, language = {en} } @misc{SzaboGaillardEgbers, author = {Szabo, Peter and Gaillard, Yann and Egbers, Christoph}, title = {Thermo-electrohydrodynamic (TEHD) convection in rotating spherical gap: A 2D-numerical simulation of the AtmoFlow sphere}, series = {European Fluid Mechanics Conference EFMC14}, journal = {European Fluid Mechanics Conference EFMC14}, pages = {37}, language = {en} } @incollection{StrangfeldBoeluekSzaboetal., author = {Strangfeld, Matthias and B{\"o}l{\"u}k, Oguzhan and Szabo, Peter and Meier, Martin and Meyer, Antoine and Sliavin, Yaraslau and Motuz, Vasyl and Egbers, Christoph}, title = {Thermo-electrohydrodynamic convection in a dielectric fluid layer with volumetric heating}, series = {GALA-Fachtagung "Experimentelle Str{\"o}mungsmechanik", 6.- 8. September 2022, Ilmenau}, booktitle = {GALA-Fachtagung "Experimentelle Str{\"o}mungsmechanik", 6.- 8. September 2022, Ilmenau}, pages = {43.1 -- 43.8}, language = {en} } @misc{SzaboGaillardZaussingeretal., author = {Szabo, Peter and Gaillard, Yann and Zaussinger, Florian and Egbers, Christoph}, title = {Thermo-electrohydrodynamic convection in a differentially heated shell with electric central force field}, series = {Proceedings in applied mathematics and mechanics : PAMM}, volume = {23}, journal = {Proceedings in applied mathematics and mechanics : PAMM}, number = {1}, issn = {1617-7061}, doi = {10.1002/pamm.202200121}, language = {en} } @misc{GaillardSzaboTravnikovetal., author = {Gaillard, Yann and Szabo, Peter and Travnikov, Vadim and Egbers, Christoph}, title = {Thermo-electrohydrodynamic convection in a rotating shell with central force field}, series = {International Journal of Heat and Mass Transfer}, volume = {Vol. 2018}, journal = {International Journal of Heat and Mass Transfer}, issn = {0017-9310}, doi = {10.1016/j.ijheatmasstransfer.2023.124760}, pages = {1 -- 12}, language = {en} } @misc{KabatJendeYueceletal., author = {Kabat, Nancy and Jende, Enrico and Y{\"u}cel, Fatma Cansu and Stathopoulos, Panagiotis}, title = {Thermodynamic analysis of a novel high-temperature heat pump cycle configuration based on the reversed Brayton cycle}, series = {International journal of sustainable energy}, volume = {44}, journal = {International journal of sustainable energy}, number = {1}, publisher = {Taylor \& Francis}, address = {Abingdon, Oxon}, issn = {1478-6451}, pages = {1 -- 37}, abstract = {High-temperature heat pumps offer a promising approach to deliver CO\$_2\$-neutral process heat by upgrading waste heat with electricity from renewable resources. In this work, a heat pump configuration including multiple heat sinks and sources is presented and compared to the recuperated Brayton cycle. An exergy analysis is conducted by using numerical simulations to provide process heat at 250°C and process cooling at -30°C simultaneously. The results show, that a multi-stage compression leads to an improved overall performance for simultaneous heating and cooling. A parametric study presents the influence of the isentropic efficiency, heat exchanger effectiveness and heat sink and source inlet temperature on the second law efficiency. This study serves as a basis to gain a better understanding on the physics of the novel cycle, highlighting the potentials of improving the efficiency of Brayton heat pumps with cycle layouts adaptation and identify the most important components for minimizing exergy losses.}, language = {en} } @misc{KabatJendeYueceletal., author = {Kabat, Nancy and Jende, Enrico and Y{\"u}cel, Fatma Cansu and Stathopoulos, Panagiotis}, title = {Thermodynamic analysis of a novel high-temperature heat pump cycle with inter cooled compression and reheated expansion based on the reversed Brayton cycle}, series = {International journal of sustainable energy}, volume = {44}, journal = {International journal of sustainable energy}, number = {1}, publisher = {Taylor \& Francis}, address = {Abingdon, Oxon}, issn = {1478-6451}, doi = {10.1080/14786451.2025.2515452}, pages = {1 -- 37}, abstract = {High temperature heat pumps offer a promising approach to deliver CO2-neutral process heat by upgrading waste heat with electricity from renewable resources. In this work, a heat pump cycle including inter cooled compression and reheated expansion is presented and compared to the simple Brayton cycle. Numerical simulations are used to investigate the provision of process heat at 250°C and process cooling at -30°C. An exergy analysis and parameter study is carried out. The results show an improved performance of the complex cycle as a result of more efficient temperature profiles improving the exergy utilisation. While previous studies often consider idealised process variants or are focused on individual purposes, the present work contributes to the analysis and evaluation of complex cycles with multi-stage process control while simultaneously supplying heat and cold. A deeper understanding of the thermodynamic interactions provides a reliable basis for the energy-related design of systems with multiple temperature levels.}, language = {en} } @misc{VankelekomStathopoulosDemeyeretal., author = {Vankelekom, Christophe and Stathopoulos, Panagiotis and Demeyer, Frederiek and De Paepe, Ward}, title = {Thermodynamic performance assessment of recuperated Brayton cycle high-temperature heat pumps for combined heat and cold roduction}, series = {Proceedings of ASME Turbo Expo 2025 : Turbomachinery Technical Conference and Exposition, June 16-20, 2025, Memphis, Tennessee : Volume 4 : Controls, Diagnostics \& Instrumentation; Cycle Innovations; Education; Electric Power}, journal = {Proceedings of ASME Turbo Expo 2025 : Turbomachinery Technical Conference and Exposition, June 16-20, 2025, Memphis, Tennessee : Volume 4 : Controls, Diagnostics \& Instrumentation; Cycle Innovations; Education; Electric Power}, editor = {Vankelekom, Christophe}, publisher = {American Society of Mechanical Engineers}, address = {New York, NY}, isbn = {978-0-7918-8880-3}, doi = {10.1115/GT2025-153988}, pages = {14}, abstract = {Producing heat at high temperatures for industrial processes like chemistry, food, or paper is still achieved using fossil fuels. To reach net-zero CO2 emissions by 2050, as desired by the European Union, technology driven by renewable energy must emerge to electrify these sectors. For this reason, high-temperature heat pumps, based on a Reversed Brayton Cycle working with air, offer a promising solution. Indeed, nowadays, most high-temperature heat pumps are vapor compression cycles but they face several issues when a higher temperature is necessary (200 °C or more). The selection of refrigerant is challenging (high compression ratio and temperature limitation), and it has a non-negligible environmental impact. Nevertheless, the Reversed Brayton cycle still suffers from a low Coefficient Of Performance (COP) that could be improved by valorizing the cold heat flux produced in the cycle. In the literature, few works are related to this combined use of heating and cooling for sub-MWth applications, which is very important for the food industry (cooking and freezing). With this work, we aim to fill this gap by proposing an analysis of the achievable potential based on the 2nd law of thermodynamics using a generic model in Aspen Plus. Using a heat sink of 250 °C and 300 °C and a heat source of -10 °C, the potential of different cycles were analyzed by varying the secondary inlet temperature of the heat sink from 100 °C to 200 °C. For low inlet temperatures, the heating and total COP can reach a value of up to 1.3 and 1.66 respectively with an exergetic efficiency up to 54\%. The COP decreases when the secondary inlet temperature of the heat sink increases while the exergy efficiency stays almost constant. A further increase does not allow to provide cooling anymore for lower outlet heat sink temperature.}, language = {en} } @misc{BarryYoshikawaKangetal., author = {Barry, Elhadj and Yoshikawa, Harunori and Kang, Changwoo and Meyer, Antoine and Meier, Martin and Crumeyrolle, Olivier and Egbers, Christoph and Mutabazi, Innocent}, title = {Thermoelectric convection in a planar capacitor: theoretical studies and experiments in parabolic flights}, series = {Comptes Rendus M{\´e}canique}, journal = {Comptes Rendus M{\´e}canique}, issn = {1873-7234}, pages = {1 -- 15}, language = {en} } @inproceedings{MutabaziKangMeyeretal., author = {Mutabazi, Innocent and Kang, Changwoo and Meyer, Antoine and Jongmanns, Marcel and Meier, Martin and Egbers, Christoph}, title = {Thermoelectric convection in dielectric liquids in a cylindrical annulus}, series = {International Conference on Rayleigh B{\´e}nard Turbulence, May 14-18, 2018, Enschede, NL}, booktitle = {International Conference on Rayleigh B{\´e}nard Turbulence, May 14-18, 2018, Enschede, NL}, pages = {S. 83}, language = {en} } @misc{MeyerYoshikawaSzaboetal., author = {Meyer, Antoine and Yoshikawa, Harunori and Szabo, Peter and Meier, Martin and Egbers, Christoph and Mutabazi, Innocent}, title = {Thermoelectric instabilities in a circular Couette flow}, series = {Philosophical transactions of the Royal Society. Series A, Mathematical, physical and engineering sciences}, volume = {381}, journal = {Philosophical transactions of the Royal Society. Series A, Mathematical, physical and engineering sciences}, number = {2243}, issn = {1471-2962}, doi = {10.1098/rsta.2022.0139}, language = {en} } @misc{MeyerSeeligGerstneretal., author = {Meyer, Antoine and Seelig, Torsten and Gerstner, Philipp and Kang, Changwoo and Meier, Martin and Jongmanns, Marcel and Baumann, Martin and Mutabazi, Innocent and Heuveline, Vincent and Egbers, Christoph}, title = {Thermoelectric instability in a vertical cylindrical annulus}, series = {8th International Symposium on Bifurcations and Instabilities in Fluid Dynamics (BIFD), 16-19 July, 2019, University of Limerick, Ireland}, journal = {8th International Symposium on Bifurcations and Instabilities in Fluid Dynamics (BIFD), 16-19 July, 2019, University of Limerick, Ireland}, address = {Limerick}, pages = {1}, language = {en} } @misc{MeyerMeierSzaboetal., author = {Meyer, Antoine and Meier, M. and Szabo, Peter and Sliavin, Yaraslau and Motuz, Vasyl and Gerstner, Philipp and Roller, Jonas and Heuveline, Vincent and Egbers, Christoph}, title = {Thermoelectric instability of a dielectric fluid in a cylindrical annulus with vertical or horizontal orientation}, series = {European Fluid Mechanics Conference EFMC14}, journal = {European Fluid Mechanics Conference EFMC14}, pages = {37}, language = {en} } @misc{YoshikawaKangMutabazietal., author = {Yoshikawa, Harunori and Kang, Changwoo and Mutabazi, Innocent and Zaussinger, Florian and Haun, Peter and Egbers, Christoph}, title = {Thermoelectrohydrodynamic convection in parallel plate capacitors under dielectric heating conditions}, series = {Physical review fluids}, volume = {5}, journal = {Physical review fluids}, number = {11}, issn = {2469-990X}, doi = {10.1103/PhysRevFluids.5.113503}, pages = {17}, language = {en} } @inproceedings{JongmannsSeeligEgbersetal., author = {Jongmanns, Marcel and Seelig, Torsten and Egbers, Christoph and Meier, Martin and Meyer, Antoine and Crumeyrolle, Olivier and Mutabazi, Innocent}, title = {Thermoelectrohydrodynamic experiments in a cylindrical gap}, 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} } @misc{ZanounJehringEgbers, author = {Zanoun, El-Sayed and Jehring, Lothar and Egbers, Christoph}, title = {Three measuring techniques for assessing the mean wall skin friction in wall-bounded flows}, series = {Thermophysics and Aeromechanics}, volume = {21}, journal = {Thermophysics and Aeromechanics}, number = {2}, issn = {1531-8699}, pages = {179 -- 190}, language = {en} } @inproceedings{ScurtuFuttererEgbers, author = {Scurtu, Nicoleta and Futterer, Birgit and Egbers, Christoph}, title = {Three-dimensional natural Convection in spherical annuli}, language = {en} } @article{ScurtuFuttererEgbers, author = {Scurtu, Nicoleta and Futterer, Birgit and Egbers, Christoph}, title = {Three-dimensional natural Convection in spherical annuli}, language = {en} } @inproceedings{HarlanderMaas, author = {Harlander, Uwe and Maas, L. R. M.}, title = {Tide-topography interactions?}, language = {en} } @incollection{BeltrameEgbersTravnikov, author = {Beltrame, Philippe and Egbers, Christoph and Travnikov, Vadim}, title = {Time-dependent dynamics in the "GEOFLOW" experiment on the ISS}, language = {en} } @misc{HallolYousryMerboldetal., author = {Hallol, Zeinab and Yousry, Mohamed and Merbold, Sebastian and Egbers, Christoph}, title = {Time-resolved PIV measurements in fully developed turbulent pipe flow}, series = {25th International Congress of Theoretical and Applied Mechanics Milan (Italy), 22-27 August 2021}, journal = {25th International Congress of Theoretical and Applied Mechanics Milan (Italy), 22-27 August 2021}, isbn = {978-83-65550-31-6}, pages = {1374 -- 1375}, language = {en} } @inproceedings{MerboldFroitzheimEgbers, author = {Merbold, Sebastian and Froitzheim, Andreas and Egbers, Christoph}, title = {Torque in turbulent Taylor-Couette flow for small radius ratios}, series = {Proceedings of the 5th International Conference on Experimental Fluid Mechanics, Munich 2018}, booktitle = {Proceedings of the 5th International Conference on Experimental Fluid Mechanics, Munich 2018}, editor = {K{\"a}hler, Christian J. and Hain, Rainer and Scharnowski, Sven and Fuchs, Thomas}, publisher = {Institute of Fluid Mechanics and Aerodynamics, Universit{\"a}t der Bundeswehr}, address = {Neubiberg}, isbn = {978-3-943207-32-3}, doi = {10.18726/2018_2}, pages = {598 -- 602}, language = {en} } @inproceedings{FroitzheimMerboldEgbers, author = {Froitzheim, Andreas and Merbold, Sebastian and Egbers, Christoph}, title = {Torque measurements and flow visualization in a wide gap Taylor-Couette Flow}, series = {15th European turbulence conference (ETC), Delft, The Netherlands (2015)}, booktitle = {15th European turbulence conference (ETC), Delft, The Netherlands (2015)}, pages = {2}, language = {en} } @misc{MerboldBrauckmannEgbers, author = {Merbold, Sebastian and Brauckmann, Hannes and Egbers, Christoph}, title = {Torque measurements and numerical determination in differentially rotating wide gap Taylor-Couette flow}, series = {Physical Review E}, volume = {87}, journal = {Physical Review E}, number = {2}, issn = {1550-2376}, doi = {10.1103/PhysRevE.87.023014}, pages = {023014 -1 -- 023014 -4}, language = {en} } @inproceedings{FroitzheimMerboldEgbers, author = {Froitzheim, Andreas and Merbold, Sebastian and Egbers, Christoph}, title = {Torque measurements in a Taylor-Couette experiment with very small radius ration of 0.357}, series = {16th European Turbulence Conference, 21-24 August, 2017, Stockholm, Sweden}, booktitle = {16th European Turbulence Conference, 21-24 August, 2017, Stockholm, Sweden}, pages = {1}, language = {en} } @inproceedings{MerboldEgbers, author = {Merbold, Sebastian and Egbers, Christoph}, title = {Torque measurements in a wide gap Taylor-Couette flow}, series = {14th European Turbulence Conference, Lyon, France, September 1-4, 2013}, booktitle = {14th European Turbulence Conference, Lyon, France, September 1-4, 2013}, pages = {2}, language = {en} } @misc{MerboldFischerEgbers, author = {Merbold, Sebastian and Fischer, Steffen and Egbers, Christoph}, title = {Torque scaling in Taylor-Couette-Flow - An experimental investigation}, language = {en} } @article{Harlander, author = {Harlander, Uwe}, title = {Towards an analytical understanding of internal wave attractors}, language = {en} } @misc{ShahirpourHerzogEgbers, author = {Shahirpour, Amir and Herzog, Nicoleta and Egbers, Christoph}, title = {Towards CFD Modeling of Carbon Dioxide Turbulent Pipe Line Transportation}, series = {Energy Procedia}, volume = {40}, journal = {Energy Procedia}, doi = {10.1016/j.egypro.2013.08.047}, pages = {408 -- 417}, language = {en} } @inproceedings{ShahirpourHerzogEgbers, author = {Shahirpour, Amir and Herzog, Nicoleta and Egbers, Christoph}, title = {Towards CFD modeling of turbulent pipeline material transportation}, 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} } @misc{RoddaHarlander, author = {Rodda, Costanza and Harlander, Uwe}, title = {Transition from Geostrophic Flows to Inertia-Gravity Waves in the Spectrum of a Differentially Heated Rotating Annulus Experiment}, series = {Journal of the Atmospheric Sciences}, volume = {77}, journal = {Journal of the Atmospheric Sciences}, number = {8}, issn = {1520-0469}, doi = {10.1175/JAS-D-20-0033.1}, pages = {2793 -- 2806}, language = {en} } @misc{HamedeMerboldEgbers, author = {Hamede, Mohammed Hussein and Merbold, Sebastian and Egbers, Christoph}, title = {Transition to the ultimate turbulent regime in a very wide gap Taylor-Couette flow (η = 0.1) with a stationary outer cylinder}, series = {EPL (Europhysics Letters)}, volume = {143}, journal = {EPL (Europhysics Letters)}, number = {2}, issn = {1286-4854}, doi = {10.1209/0295-5075/acdea1}, language = {en} } @incollection{MerboldKumarEgbers, author = {Merbold, Sebastian and Kumar, Chandana B.V. and Egbers, Christoph}, title = {Transparent water tunnel for educational purpose of fundamental flow phenomena and Laser-optical measurement techniques}, series = {Experimentelle Str{\"o}mungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau}, booktitle = {Experimentelle Str{\"o}mungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau}, publisher = {Deutsche Gesellschaft f{\"u}r Laser-Anemometrie - German Association for Laser Anemometry GALA e.V.}, address = {Karlsruhe}, isbn = {978-3-9816764-8-8}, pages = {8}, language = {en} } @phdthesis{Schoen, author = {Sch{\"o}n, Franz-Theo}, title = {Transport and waves in parametrically excited fluid layers}, publisher = {Brandenburgische Technische Universit{\"a}t}, address = {Cottbus ; Senftenberg}, doi = {10.26127/BTUOpen-6995}, pages = {xvi, 133}, abstract = {The transport and waves in parametrically excited fluid layers play a significant role in an understanding of non-linear surface wave phenomena and tidal resonances. In this thesis, we study resonant waves occurring in a circular channel with various obstacles under external oscillatory excitation. Typically, such sloshing experiments are conducted in rectangular, straight channels. The external excitation is implemented using a rotating table on which the entire experiment, including measurement equipment, is mounted. The excitation is either sinusoidal or ratched motion. The obstacles include a fully blocking barrier and a symmetric or asymmetric hill. The channel circumference is 4.76 m, with water depths ranging from 2 cm to 6 cm. Wave displacements within the channel are measured using 17 ultrasonic sensors equidistantly distributed along half of the channel. Particle Image Velocimetry (PIV) is employed to measure the flow. We also consider a simplified numerical model capable of reproducing the experimental results. This model is based on a long-wave approximation and vertical integration using a profile function (K{\´a}rm{\´a}n-Pohlhausen approach). Additionally, we use a wave attractor model to quantitatively explain the development of resonances. These resonances are distributed in bands of the excitation frequency around the linear eigenfrequency. The experimental wave attractor and numerical results are consistent with each other. The waves observed within these resonant frequency bands appear as undular bores or solitary waves. In the fully blocking case, bands of constructive and destructive interference are observed, while in the presence of hills, all eigenfrequencies exhibit resonances of varying intensity. These non-linear wave phenomena are characterized by strong transport properties, which can be studied here due to the fact that the circular channel is not fully blocked. The ratched excitation generated asymmetric wave fields, which also induced asymmetric transport in the channel, leading to the emergence of a mean flow in the channel. A similar mean channel flow is observed for the asymmetric hill; however, wave-induced transport played a lesser role in this case. This is attributed to a large separation vortex on the steep side of the hill, which created a valve effect that rectified part of the oscillatory flow. These results are of interest not only for engineering applications but also for the understanding of tidal flows over seabed topography.}, language = {en} } @misc{FuttererKochEgbers, author = {Futterer, Birgit and Koch, Sandy and Egbers, Christoph}, title = {Traveling waves in low and intermediate rotating spherical shell convection}, language = {en} } @inproceedings{MotuzKornilovJehringetal., author = {Motuz, Vasyl and Kornilov, V. I. and Jehring, Lothar and Egbers, Christoph}, title = {Turbulent Boundary Layer Over An Uniformly Perforated Surface With Blowing}, language = {en} } @inproceedings{HasanuzzamanMotuzMerboldetal., author = {Hasanuzzaman, Gazi and Motuz, Vasyl and Merbold, Sebastian and Egbers, Christoph and Cuvier, Christophe and Foucaut, Jean-Marc}, title = {Turbulent boundary layer statistics under the influence of uniform micro-blowing}, series = {16th European Turbulence Conference, 21-24 August, 2017, Stockholm, Sweden}, booktitle = {16th European Turbulence Conference, 21-24 August, 2017, Stockholm, Sweden}, pages = {1}, language = {en} } @inproceedings{MerboldFischerEgbers, author = {Merbold, Sebastian and Fischer, Steffen and Egbers, Christoph}, title = {Turbulent Couette-Taylor flow - An experimental investigation of the angular momentum flux}, language = {en} } @inproceedings{OenguenerZanounEgbers, author = {{\"O}ng{\"u}ner, Emir and Zanoun, El-Sayed and Egbers, Christoph}, title = {Turbulent Pipe Flow Structure Analysis in CoLa-Pipe}, series = {Book of abstracts, 85th Annual Meeting of the International Association of Applied Mathematics and Mechanics, March 10 - 14, 2014, Erlangen}, booktitle = {Book of abstracts, 85th Annual Meeting of the International Association of Applied Mathematics and Mechanics, March 10 - 14, 2014, Erlangen}, publisher = {Gesellschaft f{\"u}r Angewandte Mathematik und Mechanik}, pages = {S. 493}, language = {en} } @inproceedings{MerboldFroitzheimEgbers, author = {Merbold, Sebastian and Froitzheim, Andreas and Egbers, Christoph}, title = {Turbulent Taylor-Couette flow for very wide gaps}, series = {ICTW 19, Book of Abstracts, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany}, booktitle = {ICTW 19, Book of Abstracts, 19th International Couette-Taylor Workshop, June 24 - 26, 2015 Cottbus, Germany}, address = {Cottbus}, pages = {26 -- 27}, language = {en} } @inproceedings{MotuzJehringEgbers, author = {Motuz, Vasyl and Jehring, Lothar and Egbers, Christoph}, title = {Turbulente Grenzschichtstr{\"o}mung an einer gleichm{\"a}ßig perforierten Wand mit Mikro-Ausblasen}, series = {Lasermethoden in der Str{\"o}mungsmesstechnik, 20. Fachtagung, 04. - 06. September 2012, Rostock}, booktitle = {Lasermethoden in der Str{\"o}mungsmesstechnik, 20. Fachtagung, 04. - 06. September 2012, Rostock}, publisher = {GALA}, address = {Karlsruhe}, isbn = {978-3-9805613-8-9}, language = {de} } @misc{HarlanderKurgansky, author = {Harlander, Uwe and Kurgansky, Michael V.}, title = {Two-dimensional internal gravity wave beam instability. Linear theory and subcritical instability}, series = {Geophysical \& Astrophysical Fluid Dynamics}, journal = {Geophysical \& Astrophysical Fluid Dynamics}, issn = {1029-0419}, doi = {10.1080/03091929.2021.1943379}, language = {en} } @misc{ZanounEgbersDewidar, author = {Zanoun, El-Sayed and Egbers, Christoph and Dewidar, Yasser}, title = {Two-Point Velocity Correlations in Fully Developed Turbulent Pipe Flow at Shear Reynolds Number of Reτ ≈ 4000}, series = {Proceedings in Applied Mathematics and Mechanics : (PAMM)}, volume = {20}, journal = {Proceedings in Applied Mathematics and Mechanics : (PAMM)}, number = {1}, issn = {1617-7061}, doi = {10.1002/pamm.202000330}, pages = {4}, language = {en} } @misc{BorciaBorciaXuetal., author = {Borcia, Ion-Dan and Borcia, Rodica and Xu, Wenchao and Bestehorn, Michael and Richter, Sebastian and Harlander, Uwe}, title = {Undular bores in a large circular channel}, series = {European Journal of Mechanics - B/Fluids}, volume = {79}, journal = {European Journal of Mechanics - B/Fluids}, issn = {0997-7546}, doi = {10.1016/j.euromechflu.2019.09.003}, pages = {67 -- 73}, abstract = {An experimental device previously developed for studying rotating baroclinic flows has been used to investigate undular bores formation, propagation and collision. Up to our knowledge this is the first experimental study of undular bores in a circular channel. For a setup without barriers, this geometry accomplishes in a natural way the periodic lateral boundary conditions, very often used in numerical simulations. An excellent agreement between the experiment and simulation has been achieved. The spatio-temporal structure of bores is well reproduced for the first few reflections or collisions.}, language = {en} } @incollection{LarcherEgbers, author = {Larcher, Thomas von and Egbers, Christoph}, title = {Untersuchung barokliner Instabilit{\"a}ten mit LDA und Str{\"o}mungsvisualisierung, in: Lasermethoden in der Str{\"o}mungsmesstechnik, 11. Fachtagung}, editor = {Dopheide, Dietrich and M{\"u}ller, Harald and Strunck, Volker and Ruck, Bodo and Leder, Alfred}, isbn = {3-00-011903-5}, language = {de} } @inproceedings{NobisReinkeSchmidtetal., author = {Nobis, Matthias and Reinke, Peter and Schmidt, Marcus and Redlich, Marcel and Egbers, Christoph and Herzog, Nicoleta and Gorenz, Paul and Christl, Andreas}, title = {Untersuchung der instation{\"a}ren Gleitlagerstr{\"o}mung}, series = {21. GALA-Tagung 2013, Lasermethoden in der Str{\"o}mungsmesstechnik, 03. - 05. September 2013, M{\"u}nchen}, booktitle = {21. GALA-Tagung 2013, Lasermethoden in der Str{\"o}mungsmesstechnik, 03. - 05. September 2013, M{\"u}nchen}, publisher = {Dt. Gesellschaft f{\"u}r Laser-Anemometrie}, address = {Karlsruhe}, isbn = {978-3-9805613-9-6}, pages = {51.1 -- 51.10}, language = {de} }