流体机械

2016, v.44;No.526(04) 1-3+16

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撞击型喷嘴雾化特性的试验研究
Experimental Study on the Atomization Characteristic of Impingement-type Nozzle

黄晓庆;张旭;张东亮;
HUANG Xiao-qing;ZHANG Xu;ZHANG Dong-liang;Nanjing Institute of Technology;Tongji University;

摘要(Abstract):

选用撞击型雾化喷嘴AM4进行雾化特性试验,研究了喷嘴背压对雾化液滴尺寸及分布的影响。研究发现,雾化液滴的直径随喷雾压力的增大而减小,但喷雾压力有其临界范围,该压力更有利于空气与液滴的热质交换。利用最小二乘法拟合出喷嘴雾化液滴的经验关联式,整理成韦伯数和雷诺数的函数关系,可用来预测喷嘴出口粒子的直径。
The atomization characteristic experiment was carried out using the impingement-type nozzle AM4,the influence of back pressure of nozzle on the size and distribution of atomized droplets was studied. The results indicated that the diameter of atomized droplets reduced with the increase of the sprayer pressure,but the sprayer pressure has its critical range,which is more conducive to the heat and mass transfer of air and droplets. The paper used the least square method to fit the empirical correlation equation of the atomized droplets of the nozzle and arranged it into the functional relationship of Weber number and Reynolds number to predict the diameter of the particles at nozzle outlet.

关键词(KeyWords): 撞击型喷嘴;雾化特性;临界压力;试验研究
impingement-type nozzle;atomization characteristic;critical range;experimental study

Abstract:

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基金项目(Foundation): 校科研基金项目(YKJ201406)

作者(Author): 黄晓庆;张旭;张东亮;
HUANG Xiao-qing;ZHANG Xu;ZHANG Dong-liang;Nanjing Institute of Technology;Tongji University;

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