关键词: 超声速射流装置~+;数值仿真;有限体积法;N-S方程

Abstract: In the research of supersonic projectile as well as dynamotor of missile fuze power supply system,it used to experiment in conventional wind tunnel,the experiment data cannot agree with the true flight data well entirely due to side wall effects and other special factors.Supersonic jet facility which suits aerodynamic dynamotor was designed.Supersonic jet flow facility is a remarkable special experimental facility.It could model the true atmosphere condition.The supersonic jet flow field was calculated by solving full N-S equation to decide the suitable model dimension.The Mach number contours of shock wave interaction were also given,which illuminates model dimension has great influence on the flow field of supersonic jet.The result indicates that model dimension plays an important role in aerodynamic dynamotor experiment.

Key words: Supersonic jet flow facility~+;Numerical simulation;Finite element method;N-S equation