Aiming at the problem of silo design, the silo ejector model and ejector function were proposed. The properties of the static pressure matching function were studied. The critical conditions were analyzed when the engine total pressure, the diameter of the silo, and the outlet pressure of the mixing chamber changed. It is proved that the curve that shows the inlet pressure of the mixing chamber changes along with the outlet pressure of the mixing chamber is a straight line parallel to the horizontal axis when the outlet pressure of the mixing chamber is smaller than the stagnation critical point, the curve that shows the inlet pressure of the mixing chamber changes along with the total pressure of the nozzle develops along the optimal pressure function curve when the total pressure of the nozzle is greater than the stagnation critical point, and the curve that shows the inlet pressure of the mixing chamber changes along with the diameter of the mixing chamber develops along the optimal pressure function curve when the diameter of the mixing chamber is smaller than the stagnation critical point. The characteristic curves of the silo ejector and the ideal ejector were compared when imbalance or wall friction were of concern, respectively, which show that the degree of imbalance has little effect on the calculation results of the silo ejector and the wall friction has a significant effect, especially near the stagnation point. The results provide important guidance for the design of silos and ejectors. Finally, the reliability of the ejector function method is verified by comparing the experimental data with the theoretical results.

针对筒仓设计中存在的问题，提出了筒仓顶出器模型和顶出器功能。研究了静压匹配函数的性质。分析了发动机总压力、料仓直径和混合室出口压力变化时的临界条件。证明当混合室出口压力小于停滞临界点时，混合室入口压力随混合室出口压力变化的曲线为平行于水平轴的直线，当喷嘴总压力大于停滞临界点时，混合室入口压力随喷嘴总压力变化的曲线沿着最优压力函数曲线发展，当混合室直径小于停滞临界点时，混合室入口压力随混合室直径变化的曲线沿最佳压力函数曲线发展。分别对考虑不平衡或壁面摩擦时筒仓顶出器和理想顶出器的特性曲线进行比较，表明不平衡度对筒仓顶出器的计算结果影响不大，壁面摩擦力影响显着，尤其是在停滞点附近。研究结果为筒仓和喷射器的设计提供了重要的指导。最后，通过实验数据与理论结果的对比，验证了喷射器函数法的可靠性。