| Numerical Study of Solid-Liquid Two-Phase Flow in StirredTanks with Rushton Impeller(Ⅱ) Prediction of Critical Impeller Speed |
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| 引用本文： | 王峰,毛在砂,沈湘黔.Numerical Study of Solid-Liquid Two-Phase Flow in StirredTanks with Rushton Impeller(Ⅱ) Prediction of Critical Impeller Speed[J].中国化学工程学报,2004(5). |
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| 作者姓名： | 王峰 毛在砂 沈湘黔 |
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| 作者单位： | Institute of Process Engineering Chinese Academy of Sciences，Beijing 100080，China，Graduate School of the Chinese Academy of Sciences，Beijing 100039，China，Institute of Process Engineering Chinese Academy of Sciences，Beijing 100080，China，Changsha Research Institute of Mining and Metallurgy Changsha 410012，China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina(No.20006015,No.20236050andNo.50134020). |
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| 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.
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