| 爆炸激波管管口稀疏波对试验段的影响 |
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| 引用本文： | 徐春光,白晓征,刘瑜,刘君.爆炸激波管管口稀疏波对试验段的影响[J].国防科技大学学报,2011,33(4):1-5. |
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| 作者姓名： | 徐春光 白晓征 刘瑜 刘君 |
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| 作者单位： | 1. 国防科技大学航天与材料工程学院,湖南长沙,410073
2. 总参陆航研究所,北京,101121 |
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| 基金项目： | 国家自然科学基金资助项目(90505003,10602064); 国家973资助项目(2009CB723802) |
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| 摘 要： | 数值模拟了爆炸激波管不同隔离段长度时管口稀疏波对试验段超压的影响。为了准确高效地模拟试验段入口的超压曲线,采用了一种将一维球对称程序和三维程序相结合的计算方法,并在一维计算中利用爆炸相似律,采用小当量爆炸来模拟实际超压波形。计算结果表明,隔离段长度L的变化不影响超压峰值;L小于等于20m时,稀疏波的影响使得试验段超压的作用时间、比冲量减小;L大于等于30m时,稀疏波对试验段超压无影响。
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| 关 键 词： | 爆炸波 激波管 稀疏波 隔离段 超压 |
| 收稿时间： | 2010/9/19 0:00:00 |
Research on the Influence of Rarefaction Wave to the Experimental Section in Blast Shock Tube |
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| XU Chunguang,BAI Xiaozheng,LIU Yu and LIU Jun.Research on the Influence of Rarefaction Wave to the Experimental Section in Blast Shock Tube[J].Journal of National University of Defense Technology,2011,33(4):1-5. |
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| Authors: | XU Chunguang BAI Xiaozheng LIU Yu and LIU Jun |
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| Institution: | XU Chun-guang1,BAI Xiao-zheng2,LIU Yu1,LIU Jun1(1.College of Aerospace and Material Engineering,National Univ.of Defense Technology,Changsha 410073,China,2.Army Aviation Research Institute,General Staff of PLA,Beijing 101121,China) |
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| Abstract: | The influence of rarefaction wave on the experimental section in blast shock tube with different isolator lengths was simulated.To simulate the incident wave at the entrance of experimental section exactly and efficiently,a new method which couples 1D and 3D computational programs was adopted,and small scale explosion was utilized to simulate actual overpressure waveforms in 1D computation according to blast similarity rule.The computation results demonstrate the following features: alteration of isolator l... |
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| Keywords: | blast wave shock tube rarefaction wave isolator overpressure |
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