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文摘
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采用二阶精度频散控制耗散格式(DCD)和8组分20个方程的基元反应模型,对轴对称变截面管道中氢氧爆轰波传播进行数值模拟.结果表明,爆轰波传播至突变截面扩张管道时,由于稀疏波的作用可能会使爆轰波局部熄爆甚至完全熄爆,对于某些敏感度高的反应气体爆轰波可以二次起爆.而在渐变截面扩张管道爆轰波相对不易熄爆. |
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其他语种文摘
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Propagation of hydrogen-oxygen detonation wave in an abruptly expanding chamber and a gradually expanding chamber was simulated by solving the axisymmetrical Euler equations. The dis-persion- control dissipation scheme (DCD) and a detailed chemical reaction kinetics model with 8 sec-tions 20 reactions were adopted. Numerical results indicate that in some ca'ses detonation wave may quench when detonation wave front diffracts at the entrance of expanding chamber due to the extreme declination of temperature and pressure. The reinitiation was found in some cases depending on the sensitivity of detonation gas. Comparison shows that detonation wave is more inclined to quench when propagating in an abruptly expanding chamber than in a gradually expanding chamber. |
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来源
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爆炸与冲击
,2004,24(5):385-390 【核心库】
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关键词
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爆炸力学
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爆轰波传播
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DCD
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扩张管道
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敏感度
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地址
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中科院力学研究所, 高温气动重点实验室, 北京, 100080
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-1455 |
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学科
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力学 |
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基金
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国家自然科学基金
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中国工程物理研究院联合基金项目
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文献收藏号
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CSCD:1673918
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1.
胡湘渝. 易燃混合气体爆炸-完全基元反应模型数值模拟[J].
安全与环境学报,2001,1(5):22-27
|
被引
1
次
|
|
|
|
|
2.
胡湘渝. 气相爆轰波结构研究[R].
气相爆轰波结构研究,2001
|
被引
3
次
|
|
|
|
|
3.
Schultz E. Validation of Detailed Reaction Mechanisms for Detonation Simulation[R].
xplosion Dynamics Laboratory Report FM99-5,Graduate Aeronautical Laboratories California Institute of Technology,2000
|
被引
1
次
|
|
|
|
|
4.
Jiang Z L. Dispersion conditions for non-oscillatory shock capturing schemes and its applications[J].
Compution Fluid Dynamics Journal,1995,2(4):137-150
|
被引
27
次
|
|
|
|
|
5.
Jiang Z L. Numerical simulation of detonation in converging chambers [J].
JSME International Journal,1997,40(3):422-431
|
被引
1
次
|
|
|
|
|
6.
Jiang Z L. Forward-running detonation drivers for high-enthalpy shock tunnels[J].
AIAA Journal,2002,40(10):2009-2016
|
被引
16
次
|
|
|
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