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Spray Patterns and Injection Characteristics of Gas-Centered Swirl Coaxial Injectors

机译:气体中心旋流同轴喷射器的喷射方式和喷射特性

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摘要

Spray characteristics of gas-centered swirl coaxial injectors, which are commonly used in staged combustion cycle engines, are investigated numerically and experimentally. The spray angle and the spreading angle are the quantitative parameters selected for experimental and numerical studies, respectively. Various gas/liquid Reynolds numbers are adopted for the operating conditions. For a fixed gas Reynolds number, the spreading angle increases with the liquid Reynolds number. Through the comparative study of the spray angle from water/air experiments, the spreading angle is analyzed for different momentum flux ratios (MFRs). The comparison of the spray and spreading angles for different MFRs shows good agreement. Modeling and study of gas-gas flow is a useful approach to understanding spray characteristics of gas-liquid flow. (C) 2017 American Society of Civil Engineers.
机译:数值和实验研究了分级燃烧循环发动机中常用的以气体为中心的涡流同轴喷射器的喷雾特性。喷雾角和扩散角分别是为实验和数值研究选择的定量参数。操作条件采用各种气/液雷诺数。对于固定的气体雷诺数,扩散角随液体雷诺数而增加。通过对水/空气实验中喷雾角的比较研究,分析了不同动量通量比(MFR)的扩散角。不同MFR的喷雾角和散布角的比较显示出很好的一致性。对气体-气体流动进行建模和研究是了解气体-液体流动的喷雾特性的有用方法。 (C)2017年美国土木工程师学会。

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