弹道学报2016，Vol.28Issue(4)：30-35,41,7.
火箭发动机水下启动过程流场数值模拟研究
Numerical Simulation of Flow Field for Underwater Starting Process of Rocket Engine
邹延兵 1卓长飞 1封锋1
作者信息
- 1. 南京理工大学 机械工程学院，南京210094
- 折叠
摘要
Abstract
The underwater starting process of rocket engine was simulated by fluid analysis software Fluent. Two-dimensional double-precision solver, pressure solver and ideal axisymmetric water-flow-field model were used. First-order implicit time discretization was used, and SIMPLE was used in pressure velocity correction method. The VOF model was used to study Multiphase flow,and K-epsilon model was used in turbulence model. Noozle flow field and wake field of the underwater rocket engine working in 50 m deep water were researched in detail,and the effects of change process of parameters on nozzle performance were analyzed. For a given nozzle, Mach number is determined for each place when the nozzle reaches supersonic flow,and the local static pressure is proportional to total pressure. Overall trends of the axial pressure in the underwater rocket engine gradually reduces in the oscillation,and finally down to ambient pressure. Distribution of temperature on axis at different times is substantially similar to temperature.关键词
水下火箭/流场仿真/尾流/气相发展Key words
underwater rocket/flow field simulation/wake/development of gas phase分类
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邹延兵,卓长飞,封锋..火箭发动机水下启动过程流场数值模拟研究[J].弹道学报,2016,28(4):30-35,41,7.
