注水角度对同心筒发射装置降温影响研究

摘要

针对某新型同心筒发射过程中存在的热载荷问题,采用筒底持续注水方式对发射装置进行降温,可以有效降低发射过程中燃气对发射装置的热冲击作用.计算中采用RNG k-ε湍流模型和mixture多相流模型求解气液两相流场,建立了考虑导弹运动的三维同心筒发射燃气射流冲击模型,对不同注水角度的湿式同心筒发射装置热物理场进行了分析研究.结果表明,当注水角度为30°时,发射装置内筒外壁面和外筒内壁面的温度最低,燃气对发射装置的热冲击最小.研究结果可为同心筒降温装置设计提供参考.%For the problem of the thermal load in the process of a new type of concentric canister launcher,injecting water in the bottom of tube can reduce the thermal shock which producing in the launching. The RNG k-ε turbulence model and mixture model is adopted to calculate the gas-liquid two phase flow field,at the same time,the gas jet shock model of three-dimensional concentric canister is built and the launcher thermal physical field in different angles of injecting is analyzed. The results show that when the inclined angle is 30°,the temperature of outer wall in inner tube and inner wall in outer tube are minimum,the shock to launcher is least. The result can provide theoretical basis for the concentric canister cooling technology.