Commun. Comput. Phys., 14 (2013), pp. 960-978.


Gaskinetic Solutions for High Knudsen Number Planar Jet Impingement Flows

Chunpei Cai 1*, Chun Zou 1

1 Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, New Mexico, 88003, USA.

Received 4 August 2012; Accepted (in revised version) 28 November 2012
Available online 19 March 2013
doi:10.4208/cicp.040812.281112a

Abstract

This paper presents a gaskinetic study and analytical results on high speed rarefied gas flows from a planar exit. The beginning of this paper reviews the results for planar free jet expanding into a vacuum, followed by an investigation of jet impingement on normally set plates with either a diffuse or a specular surface. Presented results include exact solutions for flowfield and surface properties. Numerical simulations with the direct simulation Monte Carlo method were performed to validate these analytical results, and good agreement with this is obtained for flows at high Knudsen numbers. These highly rarefied jet and jet impingement results can provide references for real jet and jet impingement flows.


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PACS: 98.58.Fd, 47.45.Ab, 52.25.Fi, 52.55.Fa, 52.35.Py
Key words: Gaskinetic theory, jet, jet impingement, Monte Carlo method.

*Corresponding author.
Email: ccai@nmsu.edu (C. Cai), chun.zou@gmail.com (C. Zou)
 

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