study the characteristic of regenerative cooling heat transfer of the LOX/Methane rocket engine thrust chamber, three-dimensional convection, radiation heat transfer between the hot gas and the wall, heat conduction through the wall, convection between coolant and cooling channel of liquid rocket engine thrust chamber were numerically investigated. During the calculation, suppose the fluid of the thrust chamber is frozen flow and consider the changes of thermophysical properties of the trans-critical CH4 with both temperature and pressure. This paper calculates a methane regenerative cooled thrust chamber by CFD, the simulation results were matched well with experimental data.%为了解液氧/甲烷火箭发动机推力室再生冷却的换热特点,采用数值模拟的方法,对液体火箭发动机推力室身部燃气与室壁间的对流、辐射换热以及通过室壁的导热、冷却剂与冷却通道间的对流换热进行了三维耦合数值计算.在计算中,假定推力室内流动为冻结流动,考虑了跨临界甲烷物性随温度和压力的变化.针对某甲烷再生冷却推力室进行CFD计算,计算结果与实验数据吻合较好.
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