摘要
火炮制退机是火炮的重要组成部分,为了减少经典火炮后坐液压阻力计算模型和制退机内部流场仿真模型简化对制退机内部流场分析精度带来的影响,通过建立基于Fluent的最大限度接近于实际情况的制退机内部流场模型,运用动态网格层变法和局部网格重构法并结合Profile文件设置动网格,通过仿真得出制退机内部流场的压力、速度等的瞬时分布;在对制退机关键部件节制环周围流场分析的基础上,对节制环磨损机理进行了研究,为今后的火炮制退机优化设计和延长制退机使用寿命提供了理论基础。
The recoil brake is an important component of the artillery. In order to reduce the influence of classical calculation model of recoil hydraulic resistance and simulation model of in- ternal flow field on the analysis precision of flow field in recoil brake, the internal flow field model of recoil brake was established by software Fluent and the model was extremely close to the actual situation. The dynamic mesh was set based on dynamic grid layering method, local re-meshing method and Profile file. The instantaneous distribution of pressure and velocity of internal flow field in recoil brake was obtained by simulation. The abrasion mechanism of throttling ring was studied based on flow field analysis around throttling ring that was one of the key components of recoil brake. This study can provide valuable theoretical references for optimal design and prolonging the service life of recoil brake.
出处
《火炮发射与控制学报》
北大核心
2015年第2期11-15,共5页
Journal of Gun Launch & Control
基金
国家自然科学基金(51275489)
关键词
制退机
流场
动网格
节制环
数值模拟
recoil brake
flow field
dynamic mesh
throttling ring
numerical simulation
