Studies on argon collisions with smooth and rough tungsten surfaces

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

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)45-49
頁數5
期刊Journal of Molecular Graphics and Modelling
45
DOIs
出版狀態Published - 2013

All Science Journal Classification (ASJC) codes

  • 光譜
  • 物理與理論化學
  • 電腦繪圖與電腦輔助設計
  • 材料化學

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