针对2 000N气氢/气氧涡流冷却推力室,采用三维全尺寸计算模型开展了仿真研究,得到了流场速度分布特点,验证了涡流冷却推力室内具有双向涡旋结构,内外涡流分界面约占涡流冷却推力室圆柱段半径的86%,燃烧区域约占涡流冷却推力室圆柱段半径的70%.分析表明:外层涡流主要受来流速度与涡流冷却推力室几何参数影响,内层涡流在黏性、燃烧等作用下室压、密度稳定.侧壁温度平均为388K,比冲效率达92%以上,仿真结果与试验对比一致. Aiming at the thrust chamber of 2 000 N gas-air / oxygen-oxygen vortex cooling, a three-dimensional full-scale calculation model was used to simulate the velocity distribution of the flow field. The two-way vortex structures in the thrust chamber were verified. The eddy current is about 86% of the radius of the cylindrical section of the thrust chamber and the combustion area accounts for about 70% of the radius of the cylindrical section of the vortex cooling thrust chamber. The analysis shows that the outer vortex is mainly affected by the velocity and the geometrical parameters of the vortex cooling thrust chamber. Under the effect of viscosity and combustion, the chamber pressure and the density are stable, the average temperature of the side wall is 388K and the specific impulse efficiency is over 92%. The simulation results are in good agreement with those of the test.