Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Schneide, Christiane"'
Publikováno v:
Chaos 32, 013123 (2022)
We explore the transport mechanisms of heat in two- and three-dimensional turbulent convection flows by means of the long-term evolution of Lagrangian coherent sets. They are obtained from the spectral clustering of trajectories of massless fluid tra
Externí odkaz:
http://arxiv.org/abs/2110.10652
Publikováno v:
Phys. Rev. Fluids 6, L041501 (2021)
Spatial regions that do not mix effectively with their surroundings and thus contribute less to the heat transport in fully turbulent three-dimensional Rayleigh-B\'{e}nard flows are identified by Lagrangian trajectories that stay together for a longe
Externí odkaz:
http://arxiv.org/abs/2011.04986
Autor:
Schneide, Christiane, Stahn, Martin, Pandey, Ambrish, Junge, Oliver, Koltai, Péter, Padberg-Gehle, Kathrin, Schumacher, Jörg
Publikováno v:
Phys. Rev. E 100, 053103 (2019)
Coherent circulation rolls and their relevance for the turbulent heat transfer in a two-dimensional Rayleigh--B\'{e}nard convection model are analyzed. The flow is in a closed cell of aspect ratio four at a Rayleigh number ${\rm Ra}=10^6$ and at a Pr
Externí odkaz:
http://arxiv.org/abs/1907.03496
Publikováno v:
Phys. Rev. Fluids 3, 113501 (2018)
We analyze large-scale patterns in three-dimensional turbulent convection in a horizontally extended square convection cell by Lagrangian particle trajectories calculated in direct numerical simulations. A simulation run at a Prandtl number Pr $=0.7$
Externí odkaz:
http://arxiv.org/abs/1810.07396
Autor:
Amelung, Lisa, Anthofer, Verena, Danabalan, Renita, Demandt, Évariste, Ebert, Barbara, Elschner, Elisabeth, Espinoza, Sara, Eufinger, Jan, Fuchslos, Stefanie, Götz, Barbara, Henzen, Christin, Hunold, Johannes, Idda, Theresa, Jansen, Lukas, Krieger, Ulrich, Rodrigues, Cristina M., Meister, Maria, Miller, Bernhard, Pitroff, Sarah, Popp, Christian, Pushkina, Aleksandra, Schatlowski, Nicole, Schimmler, Sonja, Schneide, Christiane, Schörner, Thomas, Schwetje, Thorsten, Seegert, Jörg, Trippel, Thorsten, Weber, Judith, Wössner, Elena, Zinke, Wolf
This White Paper sets out commonly agreed definitions on activities of consortia within NFDI. It aims to provide a common basis for reporting and reference regarding selected questions of cross-consortial relevance in DFG’s template for the Interim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b4c0d62d08b8b013a32d6a24064e7ce
Akademický článek
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Akademický článek
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Extraction of finite-time coherent sets in 3D Rayleigh-Benard Convection using the dynamic Laplacian
Autor:
Froyland, Gary, Klünker, Anna, Padberg-Gehle, Kathrin, Schneide, Christiane, Schumacher, Jörg
Publikováno v:
Froyland, G, Klünker, A, Padberg-Gehle, K, Schneide, C & Schumacher, J 2020, ' Extraction of finite-time coherent sets in 3D Rayleigh-Benard Convection using the dynamic Laplacian ', Bulletin of the American Physical Society, vol. 65, no. 13, K08.00003 . < https://meetings.aps.org/Meeting/DFD20/Session/K08.3 >
Turbulent convection flows in nature are often organized in regular large-scale patterns, which evolve slowly relative to to the typical convective timescale, and are arranged on spatial scales that are much larger than the layer height. Prominent ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3697::3306baecb0c75d735fb414620053ff7b
https://meetings.aps.org/Meeting/DFD20/Session/K08.3
https://meetings.aps.org/Meeting/DFD20/Session/K08.3
Publikováno v:
Schumacher, J, Vieweg, P P, Schneide, C & Padberg-Gehle, K 2020, ' Lagrangian Coherent Sets as transport barriers in convection ', Bulletin of the American Physical Society, vol. 65, no. 13, F16.00009 . < https://meetings.aps.org/Meeting/DFD20/Session/F16.9 >
The analysis of the turbulent heat transfer in thermal convection flow is mostly done in the Eulerian frame of reference. Here, we use an ensemble of more than half a million individual Lagrangian tracer trajectories, which are advected together with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3697::10e064d966f4d8861b3fb2231f059f6e
https://meetings.aps.org/Meeting/DFD20/Session/F16.9
https://meetings.aps.org/Meeting/DFD20/Session/F16.9
Autor:
Kräuter, Robert, Krasnov, Dmitry, Pandey, Ambrish, Schneide, Christiane, Padberg-Gehle, Kathrin, Giannakis, Dimitrios, Sreenivasan, Katepelli R., Schumacher, Jörg
Publikováno v:
Jülich : Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag, Publication Series of the John von Neumann Institute for Computing (NIC) NIC Series 50, 357-366 (2020).
NIC Symposium 2020
NIC Symposium 2020NIC Symposium 2020, Jülich, Germany, 2020-02-27-2020-02-28
Kräuter, R, Krasnov, D, Pandey, A, Schneide, C, Padberg-Gehle, K, Giannakis, D, Sreenivasan, K R & Schumacher, J 2020, Machine Learning Applications in Convective Turbulence . in M Müller, K Binder & A Trauntmann (eds), NIC Symposium 2020 : 27 − 28 February 2020, Jülich, Germany, Proceedings . Publication Series of the John von Neumann Institute for Computing (NIC), vol. 50, Forschungszentrum Jülich, Jülich, pp. 357-366, 10th John von Neumann Institute for Computing Symposium-2020, Jülich, Germany, 27.02.20 . < http://juser.fz-juelich.de/record/874547?ln=de >
NIC Symposium 2020
NIC Symposium 2020NIC Symposium 2020, Jülich, Germany, 2020-02-27-2020-02-28
Kräuter, R, Krasnov, D, Pandey, A, Schneide, C, Padberg-Gehle, K, Giannakis, D, Sreenivasan, K R & Schumacher, J 2020, Machine Learning Applications in Convective Turbulence . in M Müller, K Binder & A Trauntmann (eds), NIC Symposium 2020 : 27 − 28 February 2020, Jülich, Germany, Proceedings . Publication Series of the John von Neumann Institute for Computing (NIC), vol. 50, Forschungszentrum Jülich, Jülich, pp. 357-366, 10th John von Neumann Institute for Computing Symposium-2020, Jülich, Germany, 27.02.20 . < http://juser.fz-juelich.de/record/874547?ln=de >
Turbulent convection flows are ubiquitous in natural systems such as in the atmosphere or in stellar interiors as well as in technological applications such as cooling or energy storage devices. Their physical complexity and vast number of degrees of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0c15cc5cd659c86ae2da9633751acdca
https://juser.fz-juelich.de/record/874547
https://juser.fz-juelich.de/record/874547