Machine Learning Applications in Convective Turbulence

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Authors

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 freedom prevents often an access by direct numerical simulations that resolve all flow scales from the smallest to the largest plumes and vortices in the system and requires a simplified modelling of the flow itself and the resulting turbulent transport behaviour. The following article summarises some examples that aim at a reduction of the flow complexity and thus of the number of degrees of freedom of convective turbulence by machine learning approaches. We therefore apply unsupervised and supervised machine learning methods to direct numerical simulation data of a Rayleigh-Bénard convection flow which serves as a paradigm of the examples mentioned at the beginning.
Original languageEnglish
Title of host publicationNIC Symposium 2020 : 27 − 28 February 2020, Jülich, Germany, Proceedings
EditorsM. Müller, K. Binder, A. Trauntmann
Number of pages10
Place of PublicationJülich
PublisherForschungszentrum Jülich
Publication date2020
Pages357-366
ISBN (Print)978-3-95806-443-0
Publication statusPublished - 2020
Event10th John von Neumann Institute for Computing Symposium - 2020 - John von Neumann Institute for Computing, Jülich, Germany
Duration: 27.02.202028.02.2020
Conference number: 10
https://www.fz-juelich.de/SharedDocs/Termine/IAS/JSC/DE/Events/2020/nic-symposium-2020.html