固体火箭技术2011，Vol.34Issue(2)：140-145,6.
同心筒发射过程燃气射流冲击效应研究
Study on impact effect of combustion gas jet during concentric canister launching process
马艳丽 1姜毅 1王伟臣 1郝继光 1赵刚练1
作者信息
- 1. 北京理工大学,宇航学院,北京,100081
- 折叠
摘要
Abstract
To study the thermo-impact and the dynamical impact effect of combustion gas jet on concentric canister and missile body during launching process,the gas-solid two phase jet flow field including Al2O3 particles was simulated based on the Euler-Lagrange method and the zone moving and dynamic meshes updating method. The flow structure and temperature and pressure distribution were obtained. The relative error of the simulation result and experimental data is in allowed range. The results show that the gas-solid two phase model is reliable. The erosion and ablation of the canister bottom is serious and the jet flow is mainly ejected through the interval between outer and inner canisters. When the interval between the inner and outer canisters increases, the temperature in the inner canister decreases firstly and then increases and the bottom pressure decreases. When the distance of the nozzle exit and the canister bottom increases, the temperature in the inner canister changes little and the bottom pressure decreases.关键词
同心筒/燃气射流/冲击效应/离散颗粒模型/域动分层法Key words
concentric canister/combustion gas jet flow/impact effect/discrete panicle model /zone moving and dynamic laying methods分类
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马艳丽,姜毅,王伟臣,郝继光,赵刚练..同心筒发射过程燃气射流冲击效应研究[J].固体火箭技术,2011,34(2):140-145,6.
