摘要
提出了筒口附加气室的筒盖系统降载方案,基于无相变轴对称VOF模型和动网格技术对附加气室体积、连通长度与筒盖受载特性之间的关系进行了建模仿真,根据附加气室体积的不同和连通环节接口长度的不同,选取4种工况进行了计算.不同工况结果的对比分析表明,附加气室确实对筒盖系统具有降载效果,且附加气室体积越大、连通长度越长,正压峰降载的效果越明显;负压峰载荷只有附加气室体积和连接长度足够大后才具有降载效果.该结果对于指导筒盖系统降载方案的设计和实施具有重要指导意义.
An add-on gas chamber technique for depressing load over cover system of underwater-launched missile was brought forward.Using 2-D axisymmetric model based on dynamic meshing technology and VOF model without phase transformation,the effects of volume and interface length of add-on gas chamber on load characteristics over cover system were modeled and simulated.According to different volume of add-on gas chamber and different interface length,four binds of working conditions were chosen.The results of different working conditions were compared and analyzed.Using this load-depressing technique,load characteristic over the cover is reduced obviously.The peak of negative pressure can depress load only when the volume of add-on gas chamber is big enough and the interface is long enough.The bigger the volume of add-on gas chamber and the longer the interface,the more obvious the effect of depressing load over cover system.The result offers reference for depressing load over cover system.
出处
《弹道学报》
EI
CSCD
北大核心
2011年第1期102-106,共5页
Journal of Ballistics
关键词
潜射发射装置
潜射导弹
压力场
VOF模型
多相流
动网格
underwater launcher
underwater-launched missile
pressure field
VOF model
multiphase fluid
dynamic meshing
