摘要
采用Mixtrue多相流模型和RNG k-ε湍流模型并结合动网格技术,通过求解非定常雷诺平均N-S方程,对潜射导弹筒口燃气泡内点火的复杂多相流问题进行了二维轴对称数值模拟。计算结果表明,在发动机点火工作前,筒口气泡不会收缩断裂;发动机点火工作后,燃气射流也未出现"断裂"和"回击"。模拟结果表明,潜射导弹发动机在筒口燃气泡内点火有利于发动机的稳定工作,可为潜射导弹水下发射与水下点火方式的研究提供参考。
Based on mixtrue multiphase model, RNG k-ε turbulence model and dynamic gridding, the unsteady RANS equations is solved. The calculation results are achieved by using the two-dimensional axisymmetrie numerical simulation to ignite in exhaust gas of submarine launching missile. The calculation result shows that, the bubble does not break before engine working, and the jets do not break after engine working. The simulation result indicates that, the ignite in exhaust gas can help engine work more stabile, providing a guide to underwater launch and ignition.
出处
《战术导弹技术》
北大核心
2016年第1期98-104,共7页
Tactical Missile Technology
关键词
潜射导弹
燃气射流
水下点火
动网格
submarine launching missile
combustion gas jet
underwater ignition
dynamic gridding
