激光散射法用于雾化场颗粒Sauter平均直径测量的若干问题研究  

Investigation on Measurement of the Sauter Mean Diameter of Particles in the Atomization Field by Using Laser Scattering Method

作　　者：万群[1] 韩肇元[1] 蔡庆军[1] 姚久成[1] 

机构地区：[1]中国科学技术大学力学和机械工程系,安徽合肥230027

出　　处：《爆炸与冲击》2001年第4期248-252,共5页Explosion and Shock Waves

基　　金：国家自然科学基金项目 ( 10 0 72 0 61)

摘　　要：通过实验室中的模拟研究 ,探计了不同的颗粒浓度 (体积分数 )造成散射光强度和分布的差异对于Sauter平均直径测量的影响。实验结果表明 ,对同一种砂粒试样 ,由于砂粒浓度造成的散射光的强度和分布的不同 ,对Sauter平均直径的测量结果基本上没有影响。还用CCD相机对按一定比例混合而成的玻璃砂进行显微放大成像 ,得到砂粒的Sauter平均直径 。Light scattering method has been used to measure mean diameter of particles by D. A. Dobbins for years, but it is seldom used to an outdoor atomization field. An experimental simulation to measure Sauter mean diameter (SMD) has been conducted for studying the influence of variety of intensity and distribution of the scattering light, which are caused by particle concentration. The experimental result shows that the different intensity and distribution of scattering light, which are induced by different concentration of sands under the same sample, have no effect on the results of measurement. In addition, an effective way has been used to improve the accuracy of the calibration of the sand sample by using CCD camera and microscope.

关 键 词：雾化场 激光散射法 Sauter平均直径 颗粒 

分 类 号：O359.1[理学—流体力学]