RESEARCH ARTICLE

Burnett simulations of gas flow and heat transfer in microchannels

  • Fubing BAO ,
  • Jianzhong LIN
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  • College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018,China

Received date: 02 Sep 2008

Accepted date: 04 Jan 2009

Published date: 05 Sep 2009

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg

Abstract

In micro- and nanoscale gas flows, the flow falls into the transition flow regime. There are not enough molecule collisions and the gas deviates from the equilibrium. The Navier-Stokes equations fail to describe the gas flow in this regime. The direct simulation Monte Carlo method converges slowly and requires lots of computational time. As a result, the high-order Burnett equations are used to study the gas flow and heat transfer characteristics in micro- and nanoscale gas flows in this paper. The Burnett equations are first reviewed, and the augmented Burnett equations with high-order slip boundary conditions are then used to model the gas flow and heat transfer in Couette and Poiseuille flows in the transition regime.

Cite this article

Fubing BAO , Jianzhong LIN . Burnett simulations of gas flow and heat transfer in microchannels[J]. Frontiers of Mechanical Engineering, 2009 , 4(3) : 252 -263 . DOI: 10.1007/s11465-009-0037-6

Acknowledgements

This study was supported by the Major Program of the National Natural Science Foundation of China (Grant No. 10632070).
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