摘要
针对计算流体力学中的各种动网格更新技术进行了综合分析,对域动分层法动网格更新技术的原理进行了阐述。应用该方法对同心筒发射装置内导弹发射过程的三维流场分布进行了非定常数值模拟,得到全流场参数在三维空间上的时间分布,并与试验结果进行对比分析,得到了该方法正确可行、可有效保证导弹发射过程模拟的计算精度及计算效率的结论。
The dynamic mesh update methods of computational fluid dynamics were analyzed. A new dynamic mesh update method, i. e, zone moving and dynamic layering method, was presented, and its principle was described. The method was used for the unsteady numerical simulation of 3D flow field distribution in the launching process of missile from concentric cylinder launcher to obtain the time distribution of flow field parameters in 3D space. The simulation results were compared with the test results. The compared result shows that the method can ensure the missile launching calculation accuracy and efficiency.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2008年第8期911-915,共5页
Acta Armamentarii
关键词
流体力学
动网格
发射
燃气射流
数值模拟
fluid mechanics
dynamic mesh
launching
jet flow
numerical simulation
