搅拌槽内液-固两相体系的数值研究（Ⅱ）临界搅拌转速的预测

CIESC Journal

• TRANSPORT PHENOMENA & FLUID MECHANICS • 上一篇下一篇

搅拌槽内液-固两相体系的数值研究（Ⅱ）临界搅拌转速的预测

王峰^a,b;毛在砂^a;沈湘黔^c

^a Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China

^b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

^c Changsha Research Institute of Mining and Metallurgy, Changsha 410012, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-10-28 发布日期:2004-10-28
通讯作者: 王峰

Numerical Study of Solid-Liquid Two-Phase Flow in Stirred Tanks with Rushton Impeller (II) Prediction of Critical Impeller Speed

WANG Feng^a,b; MAO Zaisha^a; SHEN Xiangqian^c

^a Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China

^b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

^c Changsha Research Institute of Mining and Metallurgy, Changsha 410012, China

Received:1900-01-01 Revised:1900-01-01 Online:2004-10-28 Published:2004-10-28
Contact: WANG Feng

摘要/Abstract

摘要： The critical impeller speed, NJS, for complete suspension of solid particles in the agitated solid-liquid two-phase system in baffled stirred tanks with a standard Rushton impeller is predicted using the computational procedure proposed in Part Ⅰ. Three different numerical criteria are tested for determining the critical solid suspension. The predicted NJS is compared with those obtained from several empirical correlations. It is suggested the most reasonable criterion for determining the complete suspension of solid particles is the positive sign of simulated axial velocity of solid phase at the location where the solid particles are most difficult to be suspended.

关键词: 搅拌槽;搅拌转速;数值研究;两相体系;临界

Abstract: The critical impeller speed, NJS, for complete suspension of solid particles in the agitated solid-liquid two-phase system in baffled stirred tanks with a standard Rushton impeller is predicted using the computational procedure proposed in Part Ⅰ. Three different numerical criteria are tested for determining the critical solid suspension. The predicted NJS is compared with those obtained from several empirical correlations. It is suggested the most reasonable criterion for determining the complete suspension of solid particles is the positive sign of simulated axial velocity of solid phase at the location where the solid particles are most difficult to be suspended.

Key words: stirred tank, solid-liquid flow, critical impeller speed, solid suspension, numerical simulation

王峰,毛在砂,沈湘黔. 搅拌槽内液-固两相体系的数值研究（Ⅱ）临界搅拌转速的预测[J]. CIESC Journal.

WANG Feng, MAO Zaisha, SHEN Xiangqian. Numerical Study of Solid-Liquid Two-Phase Flow in Stirred Tanks with Rushton Impeller (II) Prediction of Critical Impeller Speed[J]. .

搅拌槽内液-固两相体系的数值研究（Ⅱ）临界搅拌转速的预测

Numerical Study of Solid-Liquid Two-Phase Flow in Stirred Tanks with Rushton Impeller (II) Prediction of Critical Impeller Speed

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