陶瓷球颗粒在圆形漏斗中下落速度的PIV研究  

Measurement of Spherical Ceramic Particles Flowing from Three-dimensional Hopper by Particle Image Velocimetry

作　　者：殷哲[1] 易维明[1] 李志合[1] 杨延强[1] 袁廷璧[1] 刘珠伟[1] 

机构地区：[1]山东理工大学轻工与农业工程学院山东省清洁能源工程技术中心,淄博255049

出　　处：《应用与环境生物学报》2009年第3期437-440,共4页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金(No.50876056)~~

摘　　要：利用PIV(粒子图像测速技术)对重力作用下陶瓷球颗粒在圆形漏斗底部出口下落的速度场进行了测量和分析.分别测量了漏斗中陶瓷球颗粒在不同起始颗粒层高度下出口处的速度、同一起始颗粒层高度下不同漏斗底部出口大小时的速度和同一出口条件下不同粒径时的速度.对不同下落高度时陶瓷球的下落速度进行了比较.结果表明,不同起始颗粒层高度对陶瓷球速度没有影响,同一粒径陶瓷球,颗粒速度随着出口的增大而增大;同一底部出口时,颗粒速度随着粒径的减小而增大.The vertical velocity of spherical ceramic particles in the hopper was measured and analyzed by particle image velocimetry （PIV）. The velocity of the spherical ceramic particles at different heights in the hopper was also measured and it was obtained by using the different sizes of aperture. The effect of different particle sizes on the velocity were analyzed at the same aperture. The experimental results indicated that the different heights of spherical ceramic particles in the hopper had a small effect on the velocity, but the different apertures and particle sizes would greatly affect the falling velocity of the ceramic particles.

关 键 词：PIV 陶瓷球颗粒 速度 粒径 

分 类 号：TQ174.1[化学工程—陶瓷工业]