液体环二次破碎所形成云雾颗粒尺寸测量和测试系统的标定  

CALIBRATION OF MEASURING SYSTEM AND INVESTIGATION OF SIZE BEHAVIOUR OF ATOMIZATION REGION FORMED BY SECONDARY BREAKUP OF LIQUID RING

作　　者：蔡庆军[1,2] 韩肇元[1,2] 万群 张寿齐[1,2] 

机构地区：[1]中国科学技术大学力学和机械工程系 [2]中国工程物理研究院

出　　处：《爆炸与冲击》1999年第2期151-157,共7页Explosion and Shock Waves

摘　　要：介绍了激光散射法测量颗粒尺寸系统的工作原理和标定结果，并对液体环轴对称抛撒进行了光学测量。实验结果表明，液体环二次破碎产生云雾区的液滴Ｓａｕｔｅｒ平均直径在固定点随时间的增加呈减小的趋势，而云雾区的宽度和云雾区前缘的液滴颗粒的Ｓａｕｔｅｒ平均直径则随测量的距离增加均有所增加。The secondary breakup is an important phase in the process of dissemination,breakup and atomization of liquid.In this paper, a laser scattering apparatus for measuring liquid droplets and its calibration are introduced.A set of experiments have been conducted in a diaphragmless shock tube,and some experimental data have been obtained.The experimental results show that,at the fixed observing point,the Sauter mean diameter of the liquid drops which were generated by the secondary breakup of liquid annular decreases with the time,the Sauter mean diameter of liquid drops in the front part of atomization region and width of the atomization region increase with the increasing of measuring distance.

关 键 词：抛撒 二次破碎 液体环 液体燃烧 雾化 尺寸测量 

分 类 号：O353.5[理学—流体力学]