摘要
建立了有限体积法(FVM)的理论模型模拟固体火箭羽流的红外特性,研究了燃气组分H2O,CO2,CO,HCL,OH,NO的吸收和发射,以及AL2O3粒子云的吸收、发射和散射,还研究了两相流场中气相和粒子云温度不均匀时对辐射传输方程的修正.计算一单喷管固体火箭的二维轴对称羽流在光谱2～5μm的红外特性,给出羽流辐射的空间分布和光谱分布并与文献计算的结果对比.研究表明:有限体积法能较好地模拟固体火箭羽流的红外特性;粒子辐射占固体火箭羽流红外辐射的主要部分;在光谱2～4μm粒子辐射使羽流辐射增强,而在光谱4～5μm粒子辐射使羽流辐射减弱.
The finite volume method （FVM） was used to simulate the infrared characteristics of the solid rocket plume. The absorption and emission of gaseous components including H2O, CO2, CO, HCL, OH and NO were taken into consideration. Also the absorption, emission and scattering of AL2O3 particle clouds were considered. The radiation transfer equation was modified for application in two phase flow that temperature of gas differed from particles. The infrared radiation in spectrum 2 - 5μm of the plume from one solid rocket with single nozzle was computed. The directional and spectral variations of the infrared radiation were presented and compared with that in document. The study showed that FVM method could accurately simulate the infrared characteristics of the solid rocket plume. The radiation of particles played the main role in the infrared radiation of solid rocket plume. The radiation of particles strengthened plume radiation in spectrum 2 ～ 4μm. The radiation of particles weakened plume radiation in spectrum 4 ～ 5μm.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2005年第6期793-797,共5页
Journal of Astronautics
关键词
FVM法
固体火箭
羽流
红外辐射
FVM method
Solid rocket
Plume
Infrared radiation
