Title: A study on the characteristics of liquid interface and condensation process of superheated vapour near a solid wall by Molecular Dynamics method

Authors: Peng-Fei Chen, Lei Chen, Ya-Ling He, Wen-Quan Tao

Addresses: Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China. ' Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China. ' Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China. ' Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China

Abstract: A vapour-liquid-solid three-phase model is constructed to simulate liquid interface characteristics and condensation process near a solid wall by Molecular Dynamics (MD) simulation method. The three-phase model shows laminated liquid density distribution and oscillating distribution of tangential stress in the near-wall region. The density and temperature changing with time in the condensation process of superheated vapour argon on difform platinum surfaces are investigated. It is found that heat transfer enhancement of roughened surfaces is no longer obvious after the formation of a stable liquid film on them.

Keywords: molecular dynamics; simulation; condensation; thermal conductivity; solid walls; liquid interface; superheated vapour; argon; modelling; liquid density distribution; liquid oscillating distribution; tangential stress; temperature; heat transfer; roughened surfaces.

DOI: 10.1504/PCFD.2011.041012

Progress in Computational Fluid Dynamics, An International Journal, 2011 Vol.11 No.3/4, pp.131 - 138

Published online: 28 Jun 2011 *

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