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为了研究低压环境下燃料的过热度、喷射压力和喷嘴几何结构对喷雾形状和液滴索特尔平均直径等喷雾特性的影响,测量了不同环境压力下的煤油泡点温度,并给出了环境压力和泡点温度的经验关系式。将过热的航空煤油通过直射式喷嘴喷入低压容器中,进行了不同喷射条件下的喷雾实验。使用高速摄影仪和激光粒度仪进行拍摄和测量,得到了一系列的粒子索特尔平均直径数据和喷雾图片。结果表明,过热度的增加、喷射压力的增加和喷嘴长径比的减小都能够改善煤油的喷射雾化效果。
In order to study the influence of fuel superheat, spray pressure and nozzle geometry on spray characteristics such as spray shape and droplet Sauter mean diameter under low pressure, the bubble point temperature of kerosene at different ambient pressures was measured and the environment Empirical relationship between pressure and bubble point temperature. The overheated aviation kerosene sprayed into the low pressure vessel through the direct nozzle, the spray test under different injection conditions. Photographing and measuring with a high-speed camera and a laser particle sizer resulted in a series of Particle Sothort mean diameter data and spray pictures. The results show that the increase of superheat, the increase of injection pressure and the decrease of nozzle aspect ratio all can improve the jet atomization effect of kerosene.