| 过渡区球头气动力特性的桥函数与DSMC仿真研究 |
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| 引用本文： | 吴雄,张来希,陈伟芳. 过渡区球头气动力特性的桥函数与DSMC仿真研究[J]. 湖南理工学院学报：自然科学版, 2002, 15(4): 26-29 |
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| 作者姓名： | 吴雄 张来希 陈伟芳 |
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| 作者单位： | 国防科技大学 湖南长沙410073(吴雄)，长沙航天工业学校 湖南长沙410205(张来希)，国防科技大学 湖南长沙410073(陈伟芳) |
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| 基金项目： | 国家自然科学基金资助项目 (批准号 :1990 2 0 2 1) |
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| 摘 要： | 采用DSMC(DirectSimulationMonte -Carlo)方法模拟三维球头过渡区流动。给出了球头绕流流场的温度与压力分布图 ,以及在不同Knudsen数、不同马赫数条件下球头表面压力系数分布曲线 ,并将阻力系数模拟结果与桥函数公式进行了比较分析。
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| 关 键 词： | DSMC方法 桥函数 过渡区流动 |
| 文章编号： | 1008-620X(2002)04-0026-04 |
| 修稿时间： | 2002-06-21 |
Research on Aerodynamic Characteristics of the Sphere in Transitional Region by Bridging-Function and DSMC Method |
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| WU Xiong ZHANG Lai-xi CHEN Wei-fang. Research on Aerodynamic Characteristics of the Sphere in Transitional Region by Bridging-Function and DSMC Method[J]. Journal of Hunan Institute of Science and Technology, 2002, 15(4): 26-29 |
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| Authors: | WU Xiong ZHANG Lai-xi CHEN Wei-fang |
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| Affiliation: | 1 National University of Defense Technology Changsha 410073 China; 2 Changsha Aerospace Industry School Changsha 410205 China |
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| Abstract: | The transitional flow over a sphere is simulated by DSMC method. The isotherm and pressure vector are shown and the pressure coefficient distribution curves of the sphere surface are also presented at different Knudsen numbers and different Mach numbers. Comparison analysis of the drag coefficient is carried out at last between simulated results and approximation data estimated by the bridging-function formula. |
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| Keywords: | DSMC method bridging-function transitional flow |
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