DSMC simulation of low-speed gas flow and heat transfer in 2D rectangular micro-channel
type: Item
instance of: scholarly article
title: DSMC simulation of low-speed gas flow and heat transfer in 2D rectangular micro-channel
zbMATH Open document ID: 1189.76422
DOI: 10.1504/PCFD.2005.006757
author: Qunwu He
author: Qiuwang Wang
author: Xian Wang
author: Laiqin Luo
published in: Progress in Computational Fluid Dynamics
publication date: 2010-06-28T00:00:00Z
review text: Summary: Effective boundary condition is one of the most critical problems in the computation of micro-channel flows with direct simulation Monte-Carlo (DSMC) method. In the present work, the implementation of DSMC with specified pressure boundary condition (PBC) was discussed in detail. The variations of gaseous local pressure, temperature and number density of the particles caused by the temperature difference between channel walls and gas were presented. It was found that with the increase of both gaseous compressibility and rarefaction, the pressure distribution along micro-channel became more nonlinear. Heat transfer occurred almost only at channel inlet and outlet, and the average wall heat flux increased almost linearly to the inlet-to-outlet pressure ratio. The computational results also showed that PBC was more suitable for the simulation of micro-channel flow problems than the conventional velocity boundary condition (VBC).
Mathematics Subject Classification ID: 76M35
Mathematics Subject Classification ID: 76N15
Mathematics Subject Classification ID: 80A20
zbMATH DE Number: 5727132
zbMATH Keywords: DSMC
zbMATH Keywords: micro-channel flow
zbMATH Keywords: low-speed gas flow
zbMATH Keywords: pressure boundary condition
zbMATH Keywords: PBC
zbMATH Keywords: velocity boundary condition
zbMATH Keywords: VBC
zbMATH Keywords: heat transfer
zbMATH Keywords: direct simulation Monte-Carlo method
zbMATH Keywords: gaseous compressibility
zbMATH Keywords: rarefaction
zbMATH Keywords: pressure distribution
MaRDI profile type: Publication
description: scientific article; zbMATH DE number 5727132