| 固体发动机人工脱粘的二维实验与数值模拟 |
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| 引用本文： | 孙得川,王贺.固体发动机人工脱粘的二维实验与数值模拟[J].固体火箭技术,2011,34(1):23-27. |
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| 作者姓名： | 孙得川 王贺 |
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| 作者单位： | 西北工业大学,航天学院,燃烧、热结构与内流场重点实验室,西安,710072 |
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| 基金项目： | 国家973项目(61338) |
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| 摘 要： | 针对固体火箭发动机前封头人工脱粘缝隙,设计了二维实验装置,用来模拟发动机点火过程中前封头人工脱粘位置受到点火冲击后的应力-应变情况.同时,采用流固耦合的数值方法,对比计算了实验工况,计算得到人工脱粘根部的应力-应变与实验吻合很好.通过数值研究发现,点火初期燃气对人工脱粘部位的冲击,会引起缝隙内部的压强振荡及装药表面的振...
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| 关 键 词： | 固体火箭发动机 人工脱粘 点火过程 实验模型 流固耦合 |
2-D experimental and numerical simulation of SRM stress-relief flap |
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| SUN De-chuan,WANG He.2-D experimental and numerical simulation of SRM stress-relief flap[J].Journal of Solid Rocket Technology,2011,34(1):23-27. |
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| Authors: | SUN De-chuan WANG He |
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| Institution: | SUN De-chuan,WANG He(Science and Technology on Combustion Internal Flow and Thermalstructure Laboratory,School of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China) |
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| Abstract: | A two dimentional test model was designed to simulate the behavior of stress-relief flap region at SRM forward dome when ignition.And CFD method was used to simulate the corresponding test.The numerical results agree well with the stress measured in tests.Numerical and experimental research show that the hot gas impacts into the gap of stress-relief flap at the beginning of ignition and results in the pressure oscillation and grain surface vibration.These oscillation and vibration tend to disappear after ig... |
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| Keywords: | solid rocket motor stress-relief flap ignition process experiments model flow-structural-interaction |
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