紧凑喷射下钝体回流区内当量比影响因素数值研究

发布时间：2018-06-17 04:36

本文选题：航空发动机 + 加力燃烧室　；参考：《燃气涡轮试验与研究》2016年04期

【摘要】：针对先进加力燃烧室火焰稳定器采用的紧凑喷射模式,以包含一个钝体稳定器的矩形模型件为研究对象,数值研究了加力条件下来流温度和速度以及喷口直径、喷射距离、钝体宽度对钝体稳定器后回流区局部当量比的影响。结果表明:提高来流温度、速度,扩大喷口直径,增加喷射距离或槽宽,都会增大钝体回流区内的当量比。最后,利用获得的数据建立了简单拟合函数,以预估紧凑喷射模式下回流区内的局部当量比。
[Abstract]:In view of the compact injection mode used in the flame stabilizer of the advanced afterburner, a rectangular model with a blunt body stabilizer is studied. The temperature and velocity of the inlet flow, the diameter of the nozzle and the injection distance are numerically studied. The influence of the blunt body width on the local equivalent ratio of the backflow region of the bluff body stabilizer. The results show that the equivalent ratio of the bluff body in the backflow region can be increased by increasing the temperature and velocity of the inlet flow expanding the nozzle diameter and increasing the injection distance or slot width. Finally, a simple fitting function is established based on the obtained data to predict the local equivalent ratio in the reflux region under the compact injection mode.
【作者单位】：中国燃气涡轮研究院;
【分类号】：V231.2

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