Large Eddy Simulations of Mixing Time in a Stirred Tank

CIESC Journal

• TRANSPORT PHENOMENA & FLUID MECHANICS • 下一篇

Large Eddy Simulations of Mixing Time in a Stirred Tank

闵健,高正明

College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-02-28 发布日期:2006-02-28
通讯作者: 高正明

Large Eddy Simulations of Mixing Time in a Stirred Tank

MIN Jian and GAO Zhengming

College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:1900-01-01 Revised:1900-01-01 Online:2006-02-28 Published:2006-02-28
Contact: GAO Zhengming

摘要/Abstract

关键词: large eddy simulations;subgrid scale model;mixing time;hydrofoil impeller

Abstract: Large eddy simulations (LES) of mixing process in a stirred tank of 0.476m diameter with a 3-narrow blade hydrofoil CBY impeller were reported. The turbulent flow field and mixing time were calculated using LES with Sma-gorinsky-Lilly subgrid scale model. The impeller rotation was modeled using the sliding mesh technique. Better agree-ment of power demand and mixing time was obtained between the experimental and the LES prediction than that by the traditional Reynolds-averaged Navier-Stokes (RANS) approach. The curve of tracer response predicted by LES was in good agreement with the experimental. The results show that LES is a reliable tool to investigate the unsteady and quasi-periodic behavior of the turbulent flow in stirred tanks.

Key words: large eddy simulations, subgrid scale model, mixing time, hydrofoil impeller

闵健,高正明. Large Eddy Simulations of Mixing Time in a Stirred Tank[J]. CIESC Journal.

MIN Jian and GAO Zhengming. Large Eddy Simulations of Mixing Time in a Stirred Tank[J]. .

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Large Eddy Simulations of Mixing Time in a Stirred Tank

Large Eddy Simulations of Mixing Time in a Stirred Tank

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