Parallel computing of diatomic molecular rarefied gas flows

Y. Matsumoto, T. Tokumasu

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A parallel algorithm for direct simulation Monte Carlo calculation of diatomic molecular rarefied gas flows is presented. For reliable simulation of such flow, an efficient molecular collision model is required. Using the molecular dynamics method, the collision of N2 molecules is simulated. For this molecular dynamics simulation, the parameter decomposition method is applied for parallel computing. By using these results, the statistical collision model of diatomic molecule is constructed. For validation this model is applied to the direct simulation Monte Carlo method to simulate the energy distribution at equilibrium condition and the structure of normal shock wave. For this DSMC calculation, the domain decomposition is applied. It is shown that the collision process of diatomic molecules can be calculated precisely and the parallel algorithm can be efficiently implemented on the parallel computer.

Original languageEnglish
Pages (from-to)1249-1260
Number of pages12
JournalParallel Computing
Issue number9
Publication statusPublished - 1997 Sep
Externally publishedYes


  • Direct simulation monte carlo method
  • Distributed memory multiprocessors
  • Domain decomposition
  • Load balance
  • Molecular collision model
  • Parameter decomposition method
  • Rarefied gas flows

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computer Networks and Communications
  • Computer Graphics and Computer-Aided Design
  • Artificial Intelligence


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