Studies on argon collisions with smooth and rough tungsten surfaces

M. S. Ozhgibesov, T. S. Leu, C. H. Cheng, A. V. Utkin

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The aim of this work is to investigate argon scattering behaviors on the smooth and rough tungsten surfaces. Current work deals with numerical simulation of nanoscale heat transfer process accompanying with rarefied gas-solid substrate interactions using molecular dynamics (MD) method. Taking into account that this method is very time consuming, MD simulation using CUDA capable Graphic Cards is implemented. The results found that imperfection of the surface significantly influences on gas atom's momentum change upon collision. However, the energy exchange rate remains unchanged regardless to the surface roughness. This finding is in contrast with the results in extant literatures. We believed the results found in this paper are important for both numerical and theoretical analyses of rarefied gas flow in micro- and nano-systems where the choice of boundary conditions significantly influences flow.

Original languageEnglish
Pages (from-to)45-49
Number of pages5
JournalJournal of Molecular Graphics and Modelling
Volume45
DOIs
Publication statusPublished - 2013 Sep 5

All Science Journal Classification (ASJC) codes

  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Computer Graphics and Computer-Aided Design
  • Materials Chemistry

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