| 三维超声速开式空腔振荡特性研究 |
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| 引用本文： | 侯中喜,夏刚,秦子增.三维超声速开式空腔振荡特性研究[J].国防科技大学学报,2004,26(6):1-4. |
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| 作者姓名： | 侯中喜 夏刚 秦子增 |
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| 作者单位： | 国防科技大学航天与材料工程学院,湖南,长沙,410073 |
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| 基金项目： | 国家部委基金资助项目(413130101) |
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| 摘 要： | 采用时间3阶、空间5阶的高精度、高分辨率格式,对稳态来流条件下超声速开式空腔的非定常振荡特性进行数值研究。通过二维和三维空腔压力变化、声压级、振荡频率等参数的计算和分析表明:空腔内存在典型的压力振荡,振荡有近似的周期性,且变化规律较复杂,三维空腔对主振荡频率影响较小,但振荡强度有较大的不同。
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| 关 键 词： | 超声速复杂流场 非定常开式空腔 WENO格式 |
| 文章编号： | 1001-2486(2004)06-0001-04 |
| 收稿时间： | 2004/4/10 0:00:00 |
| 修稿时间： | 2004年4月10日 |
The Numerical Analysis of Oscillatory Characteristics in 3D Supersonic Open Cavity |
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| HOU Zhongxi,XIA Gang and QIN Zizeng.The Numerical Analysis of Oscillatory Characteristics in 3D Supersonic Open Cavity[J].Journal of National University of Defense Technology,2004,26(6):1-4. |
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| Authors: | HOU Zhongxi XIA Gang and QIN Zizeng |
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| Institution: | College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | The unsteady oscillatory characteristics in supersonic cavity are numerically studied in the steady inflow condition. 5 order WENO scheme and 3 order Runge-Kutta algorithm are used. Through numerically calculating and analyzing the pressure changing procedure, sound pressure level, oscillatory frequency in 2D and 3D cavity, it shows that there is typical pressure oscillatory in cavity. The oscillatory has approximate cycle, but the law of cycle is very complex. 3D cavity exerts little effect on the main oscillatory frequency, but the oscillatory intensity is quite different in 2D and 3D. |
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| Keywords: | supersonic complex flowfield unsteady open cavity WENO scheme |
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