In this paper, the basic ideas underlying the Direct Simulation Monte Carlo (DSMC) method are examined and a novel nonhomogeneous N-particle kinetic equation describing the randomized mathematical model of DSMC is derived. It is shown that different collision-partner selection schemes, including No-Time-Counter (NTC) and Bernoulli-trials schemes, are approximations of the general transition operator of the randomized model. The popular collision-partner selection schemes, represented by the standard NTC and Bernoulli-trials approximations of the general transition operator, represented by Simplified Bernoulli-trials and Generalized Bernoulli-trials schemes, are tested on the one-dimensional rarefied gas heat transfer problem against conditions of two approximation limits: first, leading to the Boltzmann equation and, second, leading to the novel N-particle kinetic one.
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June 2019
Research Article|
June 12 2019
On the basic concepts of the direct simulation Monte Carlo method
Special Collection:
Direct Simulation Monte Carlo — The Legacy of Graeme A. Bird
S. K. Stefanov
S. K. Stefanov
a)
Institute of Mechanics, Bulgarian Academy of Sciences
, Acad. G. Bonchev Str., Block 4, 1113 Sofia, Bulgaria
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a)
Email: stefanov@imbm.bas.bg
Note: This paper is part of the special issue on Direct Simulation Monte Carlo—The Legacy of Graeme A. Bird.
Physics of Fluids 31, 067104 (2019)
Article history
Received:
April 05 2019
Accepted:
May 21 2019
Citation
S. K. Stefanov; On the basic concepts of the direct simulation Monte Carlo method. Physics of Fluids 1 June 2019; 31 (6): 067104. https://doi.org/10.1063/1.5099042
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