Year: 2024
Author: Jiahong Cai, Shengye Wang, Wei Liu
Communications in Computational Physics, Vol. 35 (2024), Iss. 2 : pp. 395–426
Abstract
In the numerical simulation of compressible turbulence involving shock waves, accurately capturing the intricate vortex structures and robustly computing the shock wave are imperative. Employing a high-order scheme with adaptive dissipation characteristics proves to be an efficient approach in distinguishing small-scale vortex structures with precision while capturing discontinuities. However, differentiating between small-scale vortex structures and discontinuities during calculations has been a key challenge. This paper introduces a high-order adaptive dissipation central-upwind weighted compact nonlinear scheme based on vortex recognition (named as WCNS-CU-Ω), that is capable of physically distinguishing shock waves and small-scale vortex structures in the high wave number region by identifying vortices within the flow field, thereby enabling adaptive control of numerical dissipation for interpolation schemes. A variety of cases involving Euler, N-S even RANS equations are tested to verify the performance of the WCNS-CU-Ω scheme. It was found that this new scheme exhibits excellent small-scale resolution and robustness in capturing shock waves. As a result, it can be applied more broadly to numerical simulations of compressible turbulence.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/cicp.OA-2023-0164
Communications in Computational Physics, Vol. 35 (2024), Iss. 2 : pp. 395–426
Published online: 2024-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 32
Keywords: Weighted compact nonlinear scheme high-order shock-capturing compressible turbulence.
Author Details
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A dynamic temporal scale equation for hybrid temporal large eddy simulation
Cai, Jiahong
Wang, Shengye
Zou, Shufan
Liu, Wei
Physics of Fluids, Vol. 37 (2025), Iss. 1
https://doi.org/10.1063/5.0245735 [Citations: 0]