【摘要】 本文对火箭水下直接点火发射过程中 ,喷管内高温燃气的推进和气囊的形成、发展等流动演变过程提出了一类简化的模型 ,并进行了非定常粘性可压缩流 Navier- Stokes方程的数值模拟。计算结果表明了简化模型的合理性 ,对水下火箭发射的流动过程分析具有一定的参考价值和工程应用价值更多还原

【Abstract】 In this paper a simple model is proposed to study the propulsion process of the hyperthermal gases in nozzle and the formation and evolution of the gas zone in water.The compressible Navier Stokes equations are also numerically solved using finite difference method.Our calculated results have verified that the simple model is reasonable to predict approximately the complex flowfield of the rocket launch under water.更多还原