| 三维高超声速底部喷流干扰流场数值模拟与试验研究 |
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| 引用本文： | 林敬周,田正雨,王志坚.三维高超声速底部喷流干扰流场数值模拟与试验研究[J].实验流体力学,2006,20(4):49-53. |
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| 作者姓名： | 林敬周 田正雨 王志坚 |
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| 作者单位： | 1. 中国空气动力研究与发展中心,四川,绵阳,621000
2. 国防科技大学航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 通过数值模拟和风洞试验两种手段对来流马赫数M∞=4、喷流压比Pj/P∞=156.8、不同迎角下的三维高超声速底部喷流干扰流场进行了研究。研究结果表明超声速底部喷流干扰流场结构复杂,有、无喷流时底部流场有很大不同,对气动力系数影响显著;在大喷流压比情况下,喷流干扰使导弹纵向气动力系数下降、压心前移。最后,对数值模拟与风洞试验在结果上的差异进行了分析。
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| 关 键 词： | 高超声速风洞试验 数值模拟 底部喷流 气动特性 三维流场 |
| 文章编号： | 1672-9897（2006）04-0049-05 |
| 收稿时间： | 2005-07-06 |
| 修稿时间： | 2006-09-04 |
Numerical and experimental study of base jet interaction in hypersonic external flow |
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| LIN Jing-zhou,TIAN Zheng-yu,WANG Zhi-jian.Numerical and experimental study of base jet interaction in hypersonic external flow[J].Experiments and Measur in Fluid Mechanics,2006,20(4):49-53. |
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| Authors: | LIN Jing-zhou TIAN Zheng-yu WANG Zhi-jian |
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| Abstract: | Hypersonic external flow interaction with base jet is a complicated aerodynamic problem.It is associated with lots of questions in engineering and consequently considered of great value in the flow mechanism research.In this paper,base jet interaction in hypersonic external flow is simulated by experimental and numerical simulations.The aerodynamic characteristics of body are presented with variation of angle of attack,from zero degree to six.It is found that under-expanded supersonic jet has significant effects on the flow structure and aerodynamic characteristics.At last,the difference of the numerical simulation and experimental results are analyzed. |
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| Keywords: | hypersonic wind tunnel experiment numerical simulation base jet aerodynamic characteristics three-dimensional flow field |
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