Direct Simulation of Monte Carlo of Hypersonic Shock Interaction

XIAO Hong; WU Di

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Direct Simulation of Monte Carlo of Hypersonic Shock Interaction

XIAO Hong * #,WU Di

School of Power and Energy,Northwestern Polytechnical University

*Correspondence author

#Submitted by

Subject:

Funding: Specialized Research Fund for the Doctoral Program of Higher Education（No.No.200806990021）

Opened online: 1 March 2012

Accepted by: none

Citation: XIAO Hong,WU Di.Direct Simulation of Monte Carlo of Hypersonic Shock Interaction[OL]. [ 1 March 2012] http://en.paper.edu.cn/en_releasepaper/content/4463988

Direct Simulation of Monte Carlo (DSMC) of hypersonic shock interaction was present. Molecule models in DSMC included hard sphere, variable hard sphere and variable soft sphere. Double-cone and Edney's type IV shock interaction was selected in DSMC research. Comparisons between DSMC and experiment were also conducted. Investigation of double-cone hypersonic flow shows that three collisions models can predict the trend of pressure coefficient and standun number. The agreement between DSMC simulation and experiment is best by hard sphere collisions model. Investigation of type IV shock interaction shows that the agreement between DSMC simulation and experiment is generally good in hard sphere and variable hard sphere collisions model. But it is unsuccessfully in variable soft sphere. Both double-cone flow and type IV shock interaction simulation shows that DSMC error depend on Kn Number and models employed for intermolecular interaction. With the Kn number increasing, DSMC error is decreasing. The error are the smallest for hard sphere model in comprised with variable hard sphere model and variable soft sphere model. When Kn number exceeds8.0 ×〖10〗^(-5), DSMC error for pressure coefficient ,stanton number and scale of interaction region is controlled within 10%.(10 Points, Times New Roman)

Keywords:Mechanics; DSMC; Shock interaction; Double-cone flow; type IV shock interaction;Experimental validation

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