| 测压导管内颗粒沉积的机理及抑制方法 |
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| 引用本文： | 李强,刘佩进,李江,杨明,王继业.测压导管内颗粒沉积的机理及抑制方法[J].固体火箭技术,2010,33(1). |
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| 作者姓名： | 李强 刘佩进 李江 杨明 王继业 |
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| 作者单位： | 1. 西北工业大学燃烧、流动与热结构国家重点实验室,西安,710072
2. 北京宇航系统工程研究所,北京,100076 |
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| 摘 要： | 针对固体火箭发动机测压导管内二相流动开展了数值分析,揭示了测压导管末端压强滞后现象的内在机理。在此基础上,提出了抑制方案,并开展了实验研究。结果表明,凝聚相颗粒在导管内壁面发生沉积形成的沉积物,可能会导致导管内燃气流通发生壅塞现象。这是引发导管末端压强滞后的主要原因,沉积物的形成主要发生在发动机点火上升阶段。基于流-固分离原理提出的抑制方案,通过有效减小进入导管内颗粒的质量,可解决测压导管末端压强的滞后问题。
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| 关 键 词： | 固体火箭发动机 测压导管 粒子沉积 抑制方法 |
Mechanism of particle deposition in piezometric tube and the suppressing method |
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| LI Qiang,LIU Pei-jin,LI Jiang,YANG Ming,WANG Ji-ye.Mechanism of particle deposition in piezometric tube and the suppressing method[J].Journal of Solid Rocket Technology,2010,33(1). |
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| Authors: | LI Qiang LIU Pei-jin LI Jiang YANG Ming WANG Ji-ye |
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| Institution: | 1.National Key Lab of Combustion;Flow and Thermo-structure;Northwestern Polytechnical University;Xi'an 710072;China;2.Beijing Inst.of Space System Engineering;Beijing 100076;China |
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| Abstract: | Numerical simulation of two-phase flow in piezometric tube was carried out,and the main factor contributing to the piezometric tube end pressure delay was discovered.Also the suppressing method was presented and validated by experiments.Results show that the deposition formed by impingement of condensed particles on the inner surface of piezometric tube may chock the gas flow in the piezometric tube,resulting in the delay of pressure at tube end.The suppressing method presented can solve the pressure delay ... |
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| Keywords: | solid rocket motor piezometric tube particle deposition suppressing method |
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