计算物理 ›› 2009, Vol. 26 ›› Issue (3): 362-370.DOI: 10.3969/j.issn.1001-246X.2009.03.005
• 研究论文 • 上一篇 下一篇
徐珊姝, 吴子牛
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XU Shanshu, WU Ziniu
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摘要： 桥函数方法已经成功应用于高超音速过渡区气动力计算,但其在一般超音速过渡区领域的适应性问题还缺乏研究.通过DSMC方法,研究适用于计算一般超音速飞行器的过渡区气动力系数的桥函数方法.经过对不同马赫数和不同努森数条件下,圆柱和钝头双楔体过渡区绕流的计算,发现erf-log桥函数方法在计算一般超音速过渡区气动力系数方面具有很好的精度.该结论在把桥函数方法推广到马赫数较低的亚轨道飞行器的过渡区气动力计算方面,具有一定的参考意义.
关键词: 桥函数, DSMC, 过渡区, 一般超音速, 亚轨道飞行器
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
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O356
徐珊姝, 吴子牛. 一般超音速过渡区气动特性的桥函数方法[J]. 计算物理, 2009, 26(3): 362-370.
XU Shanshu, WU Ziniu. Transitional Bridging of Supersonic Aerodynamics[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2009, 26(3): 362-370.
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链接本文: http://www.cjcp.org.cn/CN/10.3969/j.issn.1001-246X.2009.03.005
http://www.cjcp.org.cn/CN/Y2009/V26/I3/362
