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设计了单喷嘴气气喷注器容热式推力室,进行了0.92～6.1 MPa范围内7个燃烧室压力工况,共17次热试车;采用壁面测温方法获得推力室沿轴向方向的内壁热流分布,得到各室压工况下燃烧室内壁热流分布曲线,不同工况的热流曲线显示出相似的分布;并从中分离出对流传热热流,得到对流传热热流与室压的关系。为拓展范围,采用多组分湍流N-S方程描述推力室内燃烧流动,采用6组分9步反应模型来描述氢氧反应,反应速率由Arrhenius公式计算,进行了5～20 MPa更高室压范围内的燃烧内流场的数值模拟,并耦合计算了各工况燃气与室壁之间的传热,获得了与试验相同规律的结果。
A single-nozzle air injection chamber was designed for the capacity of heat-induced thrust chamber. Seven combustion chamber pressure conditions of 0.92 ~ 6.1 MPa were achieved, and a total of 17 heat tests were carried out. Wall temperature measurement was used to obtain thrust chamber along the axial direction The distribution of heat flow in the inner wall and the heat flow distribution in the inner wall of each chamber were obtained. The curves of heat flow in different working conditions showed a similar distribution. The convection heat flow was separated from it, and the relationship between convective heat flow and pressure was obtained. In order to expand the range, multi-component turbulent Navier-Stokes equations were used to describe the combustion flow in a thrust chamber. The 6-component 9-step reaction model was used to describe the hydrogen and oxygen reactions. The reaction rate was calculated by the Arrhenius formula. The numerical simulation of the internal combustion flow field and the heat transfer between the gas and the wall of each chamber were calculated and the results were obtained.