摘要
基于ALE(Arbitrary Lagrangian-Eulerian)描述的N-S方程,利用动网格方法适应边界移动,对喉栓式推力可调固体火箭发动机在推力调节过程中发动机的内流场进行了非稳态数值模拟,分析了喉栓运动速度、发动机自由容积对推力调节性能的影响规律,揭示了喉栓式发动机推力调节过程中发动机的动态响应特性。所得结论可为喉栓式推力可调发动机的设计、试验提供依据。
Based on the N-S equation described by Arbitrary Lagrangian-Eulerian （ALE）, numerical simulation method was used to investigate the unsteady internal flow field during the thrust control process of pinfle controlled solid rocket motors. To adapt movements of the boundaries,dynamic mesh was adopted. The effects of the pinfle moving velocity and free volume of motor on the thrust controlling capability were analyzed in detail. The dynamic response characteristics of the motor during thrust controlling process were predicted. The result is useful for design, experiment and application of pinfle-controlled solid rocket motors.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2009年第1期48-52,共5页
Journal of Solid Rocket Technology
关键词
喉栓式推力可调固体火箭发动机
动态响应特性
动网格
非稳态
数值分析
pintle-controlled solid rocket motor
dynamic response characteristics
dynamic mesh
unsteady state
numerical analysis
