Transitional Bridging of Supersonic Aerodynamics

doi:10.3969/j.issn.1001-246X.2009.03.005

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2009, Vol. 26 ›› Issue (3): 362-370.DOI: 10.3969/j.issn.1001-246X.2009.03.005

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Transitional Bridging of Supersonic Aerodynamics

XU Shanshu, WU Ziniu

School of Aerospace, Tsinghua University, Beijing 100084, China

Received:2007-12-03 Revised:2008-05-06 Online:2009-05-25 Published:2009-05-25

Abstract

Abstract: We study bridging relations of supersonic aerodynamics in transitional regime by direct simulation Monte Carlo(DSMC).Flows around a cylinder and a blunt double-wedge in a wide range of Mach and Knudsen numbers are simulated.The erf-log bridging relation exhibits good accuracy in supersonic aerodynamics in rarefied transitional regime.It is helpful in predicting low supersonic aerodynamic coefficients of sub-orbital spacecrafts by bridging relations.

Key words: bridging relation, DSMC, transitional regime, supersonic, sub-orbital spacecraft

CLC Number:

O356

XU Shanshu, WU Ziniu. Transitional Bridging of Supersonic Aerodynamics[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2009, 26(3): 362-370.

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