Analysis of Turbulence Structure in the Stirred Tank with a Deep Hollow Blade Disc Turbine by Time-resolved PIV

作     者：刘心洪 包雨云 李志鹏 高正明 LIU Xinhong;BAO Yuyun;LI Zhipeng;GAO Zhengming

作者机构：School of Chemical Engineering Beijing University of Chemical Technology Beijing 100029 China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2010年第18卷第4期

页      面：588-599页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0824[工学-船舶与海洋工程] 082401[工学-船舶与海洋结构物设计制造] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Supported by the National Natural Science Foundation of China(20776008 20821004 20990224) the National Basic Research Program of China(2007CB714300) 

主　　题：stirred tank time-resolved particle image velocimetry wavelet analysis energy spectrum power spectral density turbulent kinetic energy 

摘      要：The turbulence structure in the stirred tank with a deep hollow blade(semi-ellispe) disc turbine(HEDT) was investigated by using time-resolved particle image velocimetry(TRPIV) and traditional *** the stirred tank,the turbulence generated by blade passage includes the periodic components and the random turbulent *** PIV with angle-resolved measurement and TRPIV with wavelet analysis were both used to obtain the random turbulent kinetic energy as a *** wavelet analysis method was successfully used in this work to separate the random turbulent kinetic *** distributions of the periodic kinetic energy and the random turbulent kinetic energy were *** the impeller region,the averaged random turbulent kinetic energy was about 2.6 times of the averaged periodic *** kinetic energies at different wavelet scales from a6 to d1 were also calculated and *** was used to record the sequence of instantaneous velocity in the impeller *** evolution of the impeller stream was observed clearly and the sequence of the vorticity field was also obtained for the identification of *** slope of the energy spectrum was approximately-5/3 in high frequency representing the existence of inertial subrange and some isotropic properties in stirred *** the power spectral density(PSD) ,one peak existed evidently,which was located at f0(blade passage frequency) generated by the blade passage.