引用本文: | 龙万花,陈伟芳,宋松和.旋成体跨音速脉动压力环境分析与预测[J].国防科技大学学报,2004,26(1):17-20.[点击复制] |
LONG Wanhua,CHEN Weifang,SONG Songhe.Analysis and Prediction of the Fluctuating Pressure Induced by Rotated Aircraft at Transonic Mach Numbers[J].Journal of National University of Defense Technology,2004,26(1):17-20[点击复制] |
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旋成体跨音速脉动压力环境分析与预测 |
龙万花1, 陈伟芳2, 宋松和1 |
(1.国防科技大学 理学院,湖南 长沙 410073;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: |
脉动压力是进行结构响应分析和力学环境研究的重要依据。利用平均流场的数值模拟方法与基于实验的工程预测模型相结合的技术途径,对跨音速下旋成体的表面脉动压力环境进行了分析与预测,给出了旋成体在不同攻角、不同马赫数条件下表面脉动压力系数分布以及脉动压力功率谱分布曲线,并且与实验结果作了比较分析,得出结论基本一致。 |
关键词: 跨音速 脉动压力系数 功率谱 |
DOI: |
投稿日期:2003-08-29 |
基金项目:国家部委基金资助项目(51413030301KG01) |
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Analysis and Prediction of the Fluctuating Pressure Induced by Rotated Aircraft at Transonic Mach Numbers |
LONG Wanhua1, CHEN Weifang2, SONG Songhe1 |
(1.College of Science, National Univ. of Defense Technology, Changsha 410073,China;2.College of Aerospace and Materials Engineering,National Univ. of Defense Technology, Changsha 410073, China)
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Abstract: |
Fluctuating pressure provides an important basis for the analysis of structure response and for the study of the dynamics environment. A new technical approach is presented, by which numerical simulation of the mean fluid field is integrated with the engineering prediction model based on experiments. For the transonic rotated aircraft, the surface fluctuating pressure environment is analyzed and predicted. And the fluctuating pressure coefficient curves and the power spectral density curves are presented at different transonic Mach numbers and different angles. The results essentially accord with the experiment results. |
Keywords: transonic fluctuating pressure coefficient power spectral density (PSD) |
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