| 管内激波串振荡和壁面脉动压力特性 |
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| 引用本文： | 王成鹏,张堃元. 管内激波串振荡和壁面脉动压力特性[J]. 实验流体力学, 2010, 24(5): 57-62. DOI: 10.3969/j.issn.1672-9897.2010.05.012 |
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| 作者姓名： | 王成鹏 张堃元 |
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| 作者单位： | 南京航空航天大学,南京,210016 |
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| 基金项目： | 国家自然科学基金(10702029,90916029) |
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| 摘 要： | 分析了管内激波串振荡引起的壁面压力脉动特性.采用直联风洞实验方式结合动态压力测量技术获得了矩形管道内不同激波串位置下的壁面压力分布数据,对所得压力脉动幅值、功率谱密度曲线等结果进行分析,探讨激波串流动非定常特点与引起压力脉动的机制.
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| 关 键 词： | 激波串 激波振荡 压力脉动 风洞实验 非定常流动 |
Shock train oscillation and wall pressure fluctuation in internal flow |
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| WANG Cheng-peng,ZHANG Kun-yuan. Shock train oscillation and wall pressure fluctuation in internal flow[J]. Experiments and Measur in Fluid Mechanics, 2010, 24(5): 57-62. DOI: 10.3969/j.issn.1672-9897.2010.05.012 |
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| Authors: | WANG Cheng-peng ZHANG Kun-yuan |
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| Affiliation: | WANG Cheng-peng,ZHANG Kun-yuan(Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | This paper presents the characteristics of wall pressure fluctuations induced by the shock train oscillations in a straight duct.The surface pressure data were achieved by using a fluctuating wall pressure measurement system under different shock train location,and statistically analyzed.The unsteady features of the flow including the shock train structure and the mechanism of pressure fluctuation are discussed. |
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| Keywords: | shock train shock oscillation pressure fluctuation wind tunnel experiment unsteady flow |
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