非贮压手持式灭火器气固两相流数值模拟仿真研究

Numerical Simulation of Gas Solid Two Phase Flow in A Non Storage Pressure Hand Held Fire Extinguisher

对非贮压手持式灭火器的气固两相流进行研究,运用Flunet软件进行数值模拟仿真,通过气体速度矢量图和颗粒速度流线图,分析了两相流体在筒体内和外的运动状态,并通过试验加以验证。结果表明仿真与试验符合程度较高,本研究为灭火器结构优化提供了理论指导。

Based on the study of gas-solid two-phase flow of the non pressure storage portable fire extinguisher,the gasvelocity vector and particle velocity streamlines were applied to analyze the motion state of two-phase flow in and out of thecylinder body,by numerical simulation based on Flunet simulation software,as well as the correctness of the simulation resultswere verified by test.It showed that the results of simulation are accordance with that of test,which provide theoretical guidancefor structure optimization of fire extinguisher.