【作者】 石惠娴； 骆仲泱； 王勤辉； 岑可法；

【Author】 Sui Hui-xian Luo Zhong-yang Wang Qin-hui Cen Ke-fa Clean Energy and Environment Engineering Key Lab of MOE, Institute for Thennal Power Engineering, Zhejiang University, Hangzhou 310027,China

【机构】 能源清洁利用与环境工程教育部重点实验室,浙江大学热能工程研究所；

【摘要】 利用自行构建的PIV系统,对-4 m高,200 mm×200mm矩形横截面的循环流化床内流场流动特性进行了冷态实验研究。在PIV图像灰度互相关法基础上,采用MQD方法匹配图像粒子对,获得了有松散颗粒团存在的随时同连续变化的二维颗粒速度矢量场,进而得出了随时间变化颗粒团对流场内颗粒速度的影响规律。更多还原

【Abstract】 The experimental research is carried out in a circulating fluidized bed 4 m in height and 200mm 200mm in cross-section, by means of a PIV (particle image velocimetry) analytic system specially constructed. The two dimensional velocity vector diagram of particles with respect to time is obtained by the MQD arithmetic of PIV based on cross-correlation. In addition, the results show the effect rules of cluster on the velocity field of the solid particles in the circulating fluidized bed.更多还原