潜艇高压气阀柱气体分配规律数值仿真

为掌握潜艇应急吹除过程中高压气阀柱内部的流场形态及其变化规律,采用六面体结构化网格对阀柱和管路内部流场进行离散化,基于FLUENT软件,对潜艇高压气阀柱对气体的汇集和再分配过程进行简化数值模拟,研究阀柱内压力和出流气体质量流量分别随入口压力、出口数量和出口背压的变化规律,并根据数值仿真结果提出实际操艇时的供气方法。仿真结果表明:在对潜艇高压气应急吹除系统进行理论研究时,不能忽略阀柱对高压气的分流作用;为提高主压载水舱的吹除效率,使用高压气进行潜艇应急挽回时应尽可能多地接入高压气瓶组。

Numerical Simulation of Gas Distribution in Submarine High Pressure Gas Pillar

In order to master the flow field pattern and the change law inside the high-pressure gas valve pillar during the submarine emergency blow-off, the inner fluid domain of the gas pillar and pipe for computing is digitized in a structured hexahedral mesh, and the process of high pressure gas pillar inflowing and reallocating gas is numerically simulated by means of the computational fluid dynamics package FLUENT. The relation between the inner gas pressure / the exit gas mass flow rate of the pillar and the inlet pressure, outlet number and outlet pressure is studied. The simulation results indicate that the diversion of high-pressure gas by gas pillar must be considered when conducting theoretical analysis of the high-pressure gas emergency blowing system of submarine, and the high-pressure gas bottle groups should be used as many as possible to ensure the ballast tank blowing efficiency for submarine emergency recovery.