Numerical simulation of twophase flow for a tail-pipe nozzle

To provide thermal boundaries for the calculation of ablation and temperature fields of the heatresistant construction,particletrajectory model and Jameson scheme of finite volume method were used to simulate the onephase and twophase flow fields for a tailpipe nozzle. The numerical results show that the gas Mach number for twophase is lower than those for onephase at the centerline,the gas temperature for twophase is higher than those for onephase at both the centerline and the wall around the throat and expansion segment, twophase flow should be considered into the design of the heatresistant construction.