On some explicit local time stepping finite volume schemes for CFD

JOURNAL OF COMPUTATIONAL PHYSICS

卷:397

Article

Jeanmasson, G.^1,2  Mary, I¹  Mieussens, L.² 

[1] Off Natl Etud & Rech Aerosp, Palaiseau, France

[2] Univ Bordeaux, CNRS, Bordeaux INP, IMB,UMR 5251, F-33400 Talence, France

关键词: Explicit local time stepping schemes;    Runge-Kutta methods;    LES;    Turbulent flows;   

DOI  :  10.1016/j.jcp.2019.07.017

来源: Elsevier

【 摘 要 】

In this paper, two local time stepping schemes of order two and three in time are proposed. By construction, they are not mass conservative but a correction stage is added to make them conservative. These schemes are compared with some local time stepping schemes existing in the literature (schemes of Constantinescu and Sandu). The comparisons are carried out on various test cases. They prove that our schemes are efficient and our third order local time stepping has a higher time accuracy than the schemes based on the strategy of Constantinescu and Sandu. Our third order local time stepping scheme is used to perform an industrial-like test case: a 3D Large-Eddy Simulation over an airfoil. (C) 2019 Elsevier Inc. All rights reserved.

【 授权许可】

Free