摘要
基于压力隐式算子分裂(PISO)算法,通过求解Navier-Stokes方程,对燃烧室内一步反应和两步反应模型、无燃烧室三种情形下尾焰流场进行了数值仿真;采用结构和非结构网格并分别用TTM方法和Delaunay三角形方法来生成;利用高温气体高分辨率光谱参数数据库HITEMP对辐射传输方程进行求解,得到三种情形下尾焰中CO2和H2O的光谱辐射亮度分布。仿真结果表明:不同的燃烧模型影响尾焰流场及其辐射,无燃烧室时尾焰辐射较弱。
Based on PISO algorithm, numerical simulation of plume flow field is studied by solving Navier-Stokes equation in three cases： one step and two steps reaction model in combustion chamber, no combustion chamber. Structured and unstructured grids generated by TTM method and Delaunay triangulation method are employed respectively. The radiation transmission equation is numerically solved by high temperature gas high resolution HITEMP database for spectral radiance distributions of CO2 and H2O. It shows that different combustion model can affect plume flow field and radiance, radiance is weaker in case of no combustion chamber.
出处
《火箭推进》
CAS
2006年第2期6-10,共5页
Journal of Rocket Propulsion
基金
预研基金:51421050404KG0216
实验技术重点项目:2001SY4105002。
关键词
尾焰
辐射
数值仿真
exhaust plume
radiation
numerical simulation
