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Performance of Under-Resolved, Model-Free LBM Simulations in Turbulent Shear Flows Read chapter Read first chapter

2020 | OriginalPaper | Chapter

Reynolds-Constrained Large-Eddy Simulation: Sensitivity to Constraint and SGS Models

Authors : Rui Wang, Zuoli Xiao

Published in: Progress in Hybrid RANS-LES Modelling

Publisher: Springer International Publishing

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Abstract

Reynolds-constrained large-eddy simulation (CLES) method proves to have advantage over traditional large-eddy simulation (LES) approach in both attached and separated turbulent flows, but its sensitivity to the constraint model and base subgrid-scale (SGS) model remains unclear. Here, a comparative study is carried out to clarify the level of dependence of CLES method upon the constraint and base models. Specifically, the Baldwin-Lomax (BL) model, Spalart-Allmaras (SA) model, and Menter’s Shear Stress Transport (SST) model are used for the Reynolds constraint models, while Smagorinsky model (SM), Wall-adapting local eddy-viscosity (WALE) model, and Dynamic Smagorinsky model (DSM) for SGS models. The compressible flow past a circular cylinder is simulated at Reynolds number \(2\times {10^5}\) and Mach number 0.75, respectively. It is manifested that the CLES method is sensitive to the constraint models, but less sensitive to the base SGS models, which provides a guideline for further optimization of the CLES method.

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Metadata
Title
Reynolds-Constrained Large-Eddy Simulation: Sensitivity to Constraint and SGS Models
Authors
Rui Wang
Zuoli Xiao
Copyright Year
2020
Book
Progress in Hybrid RANS-LES Modelling

Print ISBN: 978-3-030-27606-5

Electronic ISBN: 978-3-030-27607-2

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-27607-2_10

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