An Overview of Hybrid RANS-LES Models Developed for Industrial CFD

An overview of scale-resolving simulation (SRS) methods used in ANSYS Computational Fluid Dynamics (CFD) software is provided. The main challenges, especially when computing boundary layers in large eddy simulation (LES) mode, will be discussed. The different strategies for handling wall-bound flows...

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Veröffentlicht in:	Applied sciences 2021-03, Vol.11 (6), p.2459, Article 2459
Hauptverfasser:	Menter, Florian, Huppe, Andreas, Matyushenko, Alexey, Kolmogorov, Dmitry
Format:	Artikel
Sprache:	eng
Schlagworte:	Boundary layers Cavitation Chemistry Chemistry, Multidisciplinary Computational fluid dynamics Computer applications Engineering Engineering, Multidisciplinary Fluid dynamics generalized k-ω (GEKO) hybrid RANS–LES methods Hydrodynamics Large eddy simulation Materials Science Materials Science, Multidisciplinary Physical Sciences Physics Physics, Applied Reynolds number scale-resolving simulations (SRS) Science & Technology Shear flow Simulation stress-blended eddy simulation (SBES) Technology turbulence modeling Viscosity Vortices
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Beschreibung
Zusammenfassung:	An overview of scale-resolving simulation (SRS) methods used in ANSYS Computational Fluid Dynamics (CFD) software is provided. The main challenges, especially when computing boundary layers in large eddy simulation (LES) mode, will be discussed. The different strategies for handling wall-bound flows using combinations of RANS and LES models will be explained, along with some specific application examples. It will be demonstrated that the stress-blended eddy simulation (SBES) approach is optimal for applications with a mix of boundary layers and free shear flows due to its low cost and its ability to handle boundary layers in both RANS and wall-modeled LES (WMLES) modes.
ISSN:	2076-3417 2076-3417
DOI:	10.3390/app11062459