Numerical Simulation of Macroscopic Mixing in a Rushton Impeller Stirred Tank

作     者：王正 毛在砂 沈湘黔 WANG Zheng;MAO Zai-sha;SHEN Xian-qian

作者机构：Institute of Process Engineering Chinese Academy of Sciences Changsha Research Institute of Mining and Metallurgy 

出 版 物：《过程工程学报》 (The Chinese Journal of Process Engineering)

年 卷 期：2006年第6卷第6期

页      面：857-863页

核心收录：

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 

基　　金：Supported by the National Natural Science Foundation of China (No.20236050 50134020) The National Basic Research Priorities Program (973) (No.2004CB217604) 

主　　题：混合 搅拌 材料 化学 

摘      要：The macroscopic mixing in a stirred tank with different tracer injection locations, impeller speeds and impeller positions is simulated numerically by solving the transport equation of the tracer based on the whole flow field in the baffled tank with a Rushton disk turbine numerically resolved using the improved inner-outer iterative procedure. Predicted mixing time is compared well with the literature correlations. The predicted residence time distribution of the stirred tank is very close to the present experimental results. The effect of the installation of a draft tube on the mixing time and residence time distributions is addressed.