深海逃逸舱射流注水均压过程仿真分析

Simulation analysis of jetting injection process of deep-sea escape capsule

以深海逃逸舱射流注水均压过程为研究对象,采用LMS Amesim和Fluent软件对射流过程中射流速度、注水时间、射流冲击压力进行仿真计算。结果表明:当外界海水压力一定时,随着注水管路通径的增大,射流最大流速略微增大,注水时间明显减小,且随着管径的增大注水时间的变化幅度逐渐减少;而射流对目标靶面的冲击压力、冲击力随管径增大明显增大,呈直线增长趋势。说明注水管径对注水时间和射流冲击的影响作用是相向冲突的,本文的计算与分析结果为逃逸舱注水管径的选取提供参考。

Taking the Jetting Injection process of deep-sea escape capsule as the research object,the LMS Amesim and Fluent software is used to calculate the jet velocity,injection time and jet impact pressure of Jetting Injection process.The results show that when the external water pressure is constant,as the pipe diameter increases,the maximum jet velocity is slightly larger,the injection time decreases significantly,and the rangeability of injection time decreases gradually as the pipe diameter increases.But the impact pressure/force of jet on the target surface is increase evidently,which shows a linear growth trend.So the effect of pipe diameter on injection time and jet impact pressure is mutually conflicting,the calculation and analysis results in this paper provide reference for the selection of water injection pipe diameter of escape capsule.