结晶器流场模拟计算与结构优化  

Simulation of Flow Field and Optimization on Structure for a Crystallizer

作　　者：李小松[1,2] 孙泽[1] 宋兴福[1] 李素贞[1] 于建国[1] 

机构地区：[1]华东理工大学国家盐湖资源综合利用工程技术研究中心,上海200237 [2]青海盐湖工业股份有限公司,青海格尔木816000

出　　处：《华东理工大学学报（自然科学版）》2012年第4期423-428,共6页Journal of East China University of Science and Technology

基　　金：上海市重点学科建设项目(B506);教育部新世纪优秀人才计划(NCET20820776)

摘　　要：数值模拟是有效研究大型工业设备内部流场的手段。本文采用多重参考系和湍流标准κ-ε模型对结晶器内部流场进行描述。利用激光粒子测速仪(PIV)测量的实验室小型搅拌槽的实验数据对计算模型进行了验证,结果表明计算模型可以有效预测搅拌设备内部的流场分布,并在此基础上研究了搅拌桨安装位置及运行参数对流场的分布影响,优化了结晶器的结构与运行参数为:搅拌桨安装高度1 000 mm,导流筒柱段长度2 000 mm,搅拌经济转速70～80 r/min。Numerical simulation is an effective way to study the hydrodynamics for the industrial scale equipments. In this paper, a mathematical model combined with κ-ε turbulent equation and multiple reference frame （MFR） was developed to predict the flow field in the crystallizer. The accuracy of the numerical method was validated by comparison with the experimental data of the flow field in a laboratory scale stirred tank measured by partical image velocity （PIV） instrument. Based on the simulation results for the flow field in the crystallizer, the effects of the impeller location, operating parameters on the flow field in the crystallizer were studied in details. It was found that the optimal parameters for the design and operation of the crystallizer were. the installed height of impeller was 1 000 mm, the column length of the crystallizer was 2 000 mm, and the economic rotational speed was 70--80 r/min.

关 键 词：工业结晶器 激光粒子测速仪 优化设计 CFD 

分 类 号：TQ115[化学工程—无机化工]