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Employing Per-Component Time Step in DSMC Simulations of Disparate Mass and Cross-Section Gas Mixtures

Published online by Cambridge University Press:  03 June 2015

Roman V. Maltsev
Roman V. Maltsev*
Affiliation:
8-22, Koltsovo, Novosibirsk, 630559, Russia
*
*Corresponding author.Email:rmaltsev@gmail.com
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Abstract

A new approach to simulation of stationary flows by Direct Simulation Monte Carlo method is proposed. The idea is to specify an individual time step for each component of a gas mixture. The approach consists of modifications mainly to collision phase simulation and recommendations on choosing time step ratios. It allows lowering the demands on the computational resources for cases of disparate collision diameters of molecules and/or disparate molecular masses. These are cases important e.g., in vacuum deposition technologies. Few tests of the new approach are made. Finally, the usage of new approach is demonstrated on a problem of silver nanocluster diffusion in argon carrier gas under conditions of silver deposition experiments.

Keywords

65C0576M28Direct Simulation Monte Carlotime stepdisparate massesgas mixturenanoclusters
Type
Research Article
Information
Communications in Computational Physics , Volume 14 , Issue 3 , September 2013 , pp. 703 - 721
Copyright
Copyright © Global Science Press Limited 2013

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