PIV MEASUREMENT OF THE GAS-SOLID FLOW PATTERN IN A CFB RISER

作     者：ShiHui-xian WangQin-hui WangCan-xing LuoZhong-yang CenKe-fa Shi Hui-xian, Wang Qin-huiClean Energy and Environment Engineering Key Laboratory of Ministry of Education, Institute forThermal Power Engineering, Zhejiang University, Hangzhou 310027, China, e-mail:shx969@sina.comWang Can-xingDepartment of Mechanics, Zhejiang University, Hangzhou 310027, ChinaLuo Zhong-yang, Cen Ke-faClean Energy and Environment Engineering Key Laboratory of Ministry of Education, Institute forThermal Power Engineering, Zhejiang University, Hangzhou 310027, China

作者机构：CleanEnergyandEnvironmentEngineeringKeyLaboratoryofMinistryofEducationInstituteforThermalPowerEngineeringZhejiangUniversityHangzhou310027China DepartmentofMechanicsZhejiangUniversityHangzhou310027China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2003年第15卷第6期

页      面：39-44页

核心收录：

学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

主　　题：gas-solid flow particle imaging velocimetry (PIV) circulating fluidizedbeds (CFB) 

摘      要：Particle Imaging Velocimetry (PIV) is a valuable measuring tool for studyingmultiphase flows, such as liquid-gas and gas-solid flow. It can be used to carry out manyhydrodynamic studies, in particular, to determine accurately the gas solid flow structure in CFB(Circulating Fluidized Beds). In this paper, the technique characteristics was described in applyingthe PIV to measure the gas-solid flow in circulating fluidized beds. A primary experiment wascomple-ted on a CFB unit with the PIV, yielding the velocity vector fields of high-density particlesfor different gas-solid superficial velocities and solid recycle rates. Velocities of thetransported particles were calculated with cross-correlation method. The major factors influencingthe successful measurement of particle velocity with the PIV technique were also described.