水下燃气射流流场数值研究  

Research on numerical simulation of combustion gas jet under water

作　　者：甘晓松[1] 贾有军[2] 鲁传敬[3] 曹嘉怡[3] 

机构地区：[1]西北工业大学航天学院,西安710072 [2]中国航天科技集团公司四院四十一所,西安710025 [3]上海交通大学工程力学系,上海200030

出　　处：《固体火箭技术》2009年第1期23-26,共4页Journal of Solid Rocket Technology

基　　金：水冲压发动机金属粒子与水掺混燃烧机理研究(No.50676087)

摘　　要：研究了固体火箭发动机水下燃气射流流场的复杂多相流问题。采用多相流M IXTURE模型,考虑了流体的可压缩性、粘性、重力作用、气水掺混效应和能量交换等各项因素。选取标准k-ε湍流模式,运用有限体积法对轴对称湍流射流流场进行数值模拟。通过对无来流情况下湍流射流模拟,发现了燃气射流的颈缩、断裂和回击现象,并通过分析解释了产生这一现象的原因。计算了有来流情况下的射流流场,发现有来流情况下燃气射流没有断裂和回击现象。The complex multiphase flow of the combustion gas jet of SRM under water was researched. The MIXTURE model was adopted, which takes into account the effects of fluid compressibility, viscosity, gravity, medium mixture and energy transfer between water and combustion gas. The standard k-e model was chosen. The finite volume method was applied to simulating the axisymmetric field. Through the numerical simulation of the gas jet under water, some special phenomena of the gas jet were found, such as shrink, break and re-hit. The reason for these phenomena was given by analyzing the results of the numerical simulation. By comparing the numerical results of the gas jet in static water with those in flowing water, different phenomena were found.

关 键 词：固体火箭发动机 燃气射流 水下点火 数值模拟 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]