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Attached and Detached Eddy Simulation Read chapter Read first chapter

2018 | OriginalPaper | Chapter

Application of a Stochastic Backscatter Model for Grey-Area Mitigation in Detached Eddy Simulations

Author : Johan C. Kok

Published in: Progress in Hybrid RANS-LES Modelling

Publisher: Springer International Publishing

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Abstract

Detached eddy simulations may suffer from so-called grey areas where the model is in LES mode but resolved turbulence is still lacking. A new stochastic backscatter model has recently been proposed and shown to be effective in grey-area mitigation for basic test cases in combination with a high-pass filtered subgrid-scale model. Here, this approach is applied to two cases with more complex flow patterns: a delta wing at high angle of attack showing vortex breakdown and a three-element airfoil. For both cases, significant grey areas are effectively prevented.

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previous chapter Effects of Convection Schemes on Hybrid RANS-LES Calculations
next chapter On Scale-Resolving Simulation of Turbulent Flows Using Higher-Accuracy Quasi-1D Schemes on Unstructured Meshes
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Metadata
Title
Application of a Stochastic Backscatter Model for Grey-Area Mitigation in Detached Eddy Simulations
Author
Johan C. Kok
Copyright Year
2018
Book
Progress in Hybrid RANS-LES Modelling

Print ISBN: 978-3-319-70030-4

Electronic ISBN: 978-3-319-70031-1

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-3-319-70031-1_13

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