Computational gas dynamics in a wide range of Mach number on heterogeneous cluster architecture

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Bocharov, A.N.^1 ; Evstigneev, N.M.^2 ; Ryabkov, O.I.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13, Moscow

125412, Russia^1

Institute for Systems Analysis, Russian Academy of Sciences, 60-letiya Oktyabrya 9, Moscow

117312, Russia^2

关键词: Complex clusters;    Conservation law;    Conservation properties;    Gas dynamics problems;    Heterogeneous clusters;    Reference data;    Second orders;    Unstructured meshes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012119/pdf
DOI  :  10.1088/1742-6596/653/1/012119

来源: IOP

【 摘 要 】

The specific features of numerical method for gas dynamics problems are considered in this paper. The viscous flows are considered in a wide range of Mach number. The numerical method is based on conservation laws applied on unstructured heterogeneous mesh with further integration on complex cluster architectures. Application of unstructured mesh allows one to perform calculation of geometrically complex 3D objects with strict conservation properties. The developed numerical method includes multiple flux solvers (Godunov's, HLLC, Roe-Fix, AUSM, etc), first and second order spatial approximation, and explicit, semi-implicit or implicit first order time schemes. The method utilizes heterogeneous GPU HPC clusters. A wide range of problems is used for verification of the developed computational complex. All results on these problems had a good agreement with reference data.