Abstract

Advanced methods of computational fluid dynamics are used for quasi steady estimation of the effect caused by injection of ablation products of a heat shield protecting a submerged contoured nozzle on discharge characteristics of the engine. Limits of discharge coefficient variation are determined depending on the injection intensity of degradation products and flow stagnation parameters that are involved in calculation of discharge coefficient. The influence of the temperature of combustion products on discharge coefficient is demonstrated.

中文翻译：

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热屏蔽降解产物的注入对浸没式喷嘴排放系数的影响

摘要

计算流体动力学的先进方法用于准稳态估计由保护浸没式轮廓喷嘴的热屏蔽的烧蚀产物对发动机排放特性的影响。排放系数变化的限制取决于降解产物的注入强度和排放系数计算中涉及的流动停滞参数。证明了燃烧产物的温度对排放系数的影响。