摘要
带制退器的膛口流场是一种具有高度瞬变性、强烈方向性的复杂波系结构流场。采用分块网格划分的整体运动处理方法和基于动态层变方法的结构动网格技术处理弹丸高速运动造成的网格变化,模拟某型带炮口制退器的火炮发射过程中的非定常燃气射流流场,根据数值结果,详细讨论了初始流场、火药燃气流场的形成与发展以及与弹丸的耦合和相互作用过程。数值计算结果可以为炮口制退器的设计与实验提供一定理论指导,为深入研究奠定良好基础。
The muzzle blast flow field is unsteady complex flow field with transiently and orientationalty. By using the whole zone movement method, and structured dynamic grid based on local layering method, the variation of grid caused by projectile movement was analyzed. The muzzle blast flow field of artillery with a muzzle brake is simulated. Form the predicted results, the coupling and interaction process among the precursor flow field, propellant gas flow field and high-speed projectile were discussed in detail. The results of this paper can be used for the strueture design of the muzzle brake,and make a good foundation for the following researeh.
出处
《火力与指挥控制》
CSCD
北大核心
2011年第2期148-151,共4页
Fire Control & Command Control
关键词
制退器
动网格
膛口流场
数值模拟
muzzle brake, dynamic grid ,muzzle blast flow ,numerical simulation
