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

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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Bibliographic Details
Main Authors: Florian Menter, Andreas Hüppe, Alexey Matyushenko, Dmitry Kolmogorov
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Applied Sciences
Subjects:
turbulence modeling
scale-resolving simulations (SRS)
hybrid RANS–LES methods
stress-blended eddy simulation (SBES)
generalized k-ω (GEKO)
Online Access:https://www.mdpi.com/2076-3417/11/6/2459
Description
Summary: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

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