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俄罗斯空气动力研究所中心学报

ISSN 打印: 1948-2590
ISSN 在线: 1948-2604

俄罗斯空气动力研究所中心学报

DOI: 10.1615/TsAGISciJ.v41.i2.50
pages 157-165

MATHEMATICAL SIMULATION OF THERMOACOUSTIC CONVECTION ON A PARALLEL SUPERCOMPUTER

A. A. Gorbunov
Institute of the Problems of Mechanics, Russian Academy of Sciences, Moscow
S. A. Nikitin
The Institute for Problems in Mechanics, Russian Academy of Sciences, Prospect Vernadskogo 101, 117526 Moscow
V. I. Polezhaev
The Institute for Problems in Mechanics, Russian Academy of Sciences, Prospect Vernadskogo 101, 117526 Moscow

ABSTRACT

One- and two-dimensional thermoacoustic convection was studied numerically in a closed volume, filled with carbon dioxide, under normal conditions (perfect gas) or in the vicinity of the stagnation point (Van der Waals gas) within the range of the Reynolds numbers 103 − 105 on the parallel computer MVC-100K of the Supercomputer Center of Russian Academy of Sciences (RAS). The achieved speedup of calculations equals 60 for the one-dimensional and 300for the two-dimensional problem compared to the single-processor computer. The fields of flow and temperature were investigated depending on the problem parameters. The necessity of using the detailed grid in both directions to resolve the thin boundary layers and fronts (104 grid nodes for the Reynolds number equal to 105) is shown.


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