摘要
对氩气工质的连续激光推力器内加热与流动过程进行数值模拟,建立了包含激光吸收、化学反应、高温效应、黏性、扩散、热传导以及辐射效应等物理机制的模型.推力室内二维轴对称流场采用可压缩Navier-Stokes方程描述,用SIMPLEC(semi-implicit method for pressure-linked equations consistent)算法求解.对解算出的流场压力和黏性应力积分获得推力,其值与类似构型推力器的实验结果吻合较好.在不同流量条件下对推力器的流场进行了计算,通过分析其特征,提出了改进推力器性能的思路.
The heating and flow process in a continuous wave laser powered thruster using argon as propellant was modeled numerically.A model of physical mechanisms including laser absorption,chemical reaction,high-temperature thermodynamics properties,viscosity,diffusion,heat conduction and the effect of radiation was built up.The two-dimensional axisymmetric flow filed described by Navier-Stokes equations was solved by pressure-based SIMPLEC（semi-implicit method for pressure-linked equations consistent） algorithm.The thrust was computed by integrating the pressure and viscosity stress all over the wall,and the value was consistent with the experimental result of a similar configuration.Then the characteristics of the filed of a thruster under different mass flow rates were analyzed,and the methods for performance improvement were presented.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2011年第1期217-222,共6页
Journal of Aerospace Power
基金
国家部委基金
关键词
激光推进
连续波
氩等离子体
推力器
数值仿真
laser propulsion
continuous wave
argon plasma
thruster
numerical simulation
