基于SPH方法的凝胶推进剂一次雾化仿真研究  

Simulation research on first atomization characteristics of gelled propellant based on SPH method

作　　者：强洪夫[1] 刘虎 韩亚伟[1] 陈福振 

机构地区：[1]第二炮兵工程大学601室,西安710025

出　　处：《固体火箭技术》2013年第1期61-66,共6页Journal of Solid Rocket Technology

基　　金：国家自然科学基金资助(51276192);第二炮兵工程大学创新性探索研究资助(EPXY0806)

摘　　要：一次雾化中存在传统网格法难以解决的自由表面、大变形等问题,本文将光滑粒子流体动力学(SPH)方法探索性地应用于凝胶推进剂一次雾化仿真研究。模型粒子数保持在105左右,在高剪切速率下,将凝胶推进剂看作高粘度牛顿流体,研究了撞击速度、撞击角度以及凝胶推进剂物性参数对雾化效果的影响,仿真结果与实验结论基本一致。As the free surface and large deformation problem in first atomization were both challenges to traditional grid based method, the first atomization characteristics of gelled propellant using Smoothed Particle Hydrodynamics （SPH） method was investi- gated. The computational models were simplified from the doublet like-on-like impinging jet injector. The particle number of each computational model was controlled at level of 10^5. As the shear rate during the impinging process was high,gelled propellant was treated as high viscous Newtonian fluid. The influences of velocity,impinging angle and viscosity were investigated. The simulation results show an agreement with analysis and experiment, which proves that SPH is an efficient method to solve the first atomization problem.

关 键 词：光滑粒子流体动力学 凝胶推进剂 一次雾化 仿真 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]