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Full Description
We are honoured to present this collection of selected papers from the International Conference on Mixing and Crystallization, held at the Tioman Island, Malaysia in April, 1998. We are grateful to the editorial board comprising five eminent researchers in the field of mixing and crystallization for their thoughtful review and suggestions. In order to make this book as current as possible some of the papers have been thoroughly revised, which caused some delay in bringing out this edited version. We received necessary support from the Institute of Post Graduate Studies and Research, the University of Malaya and the Special Research Centre for Multiphase Processes, and the University of Newcastle, Australia in organizing this conference. We are indebted to the Institute of Chemical Engineers, United Kingdom, and the Institution of Engineers, Malaysia for their sponsorship. We would like to thank K.C. Lim, Dr. C. Ramakanth and Ms. Zubaidah for their help at the various stages of editing. We would also like to express our gratitude to Professor Mohd. Ali Hashim and Dr. Nafis Ahmed for their help and encouragement. Finally, I would like to thank Kluwer Academic Publishers for publishing this book. Bhaskar Sen Gupta Shaliza Ibrahim University of Malaya, Kuala Lumpur xi CFD MODELLING OF HYDRODYNAMIC CONDITIONS WITHIN THE WAKE OF MIXING IMPELLER BLADES 1 G.D. RIGByl., G. LANE . AND G.M. EVANSl.
Contents
Mixing.- CFD Modelling of Hydrodynamic Conditions within the Wake of Mixing Impeller Blades.- Visualisation and quantification of laminar flow mixing in a stirred tank reactor.- Turbulence structure and isotrophy in stirred vessels.- A study of agitated gas-liquid reactors with concave blade impellers.- Studies of aerated mixing with multiple axial flow hydrofoil (APV B2) impellers.- Interstage backmixing of a gas-liquid multistage, mechanically-agitated, compartmented column.- Mass transfer in a plunging liquid jet.- An optimum concentration for the suspension of solids in stirred vessels.- Crystallization.- Freeze concentration with ice-lining in a crystallizer of agitated vessel.- How agglomeration Processes affect experimentally determined nucleation rates.- On-line measurement of solids distribution I stirred tanks and crystallizers using electrical computed tomography.- A new expression for dispersedness of multi-phase taking account of consideration of local size distribution.- Size dependent classification function in imperfectly mixed suspension continuous crystallizer.- An experimental study to the effects of supersaturation ratio, impeller design and Impeller speed on agglomeration of aluminium trihydroxide.- The precipitation of silica from acidic zinc leach liquors.- Precipitation of microcrystals of salicycle acid in a T mixer: experimental study and Modelling.- Mixing, reaction and precipitation: The Barium Sulphate Precipitation System.- Micromixing in a Single Feed Semibatch Precipitation Process.- Yield Model of a Batch Gibbsite Precipitator.- Modelling of a Constant Supersaturation Precipitator.- How to Influence the Median Crystal Size of Precipitates.- Modeling Fluctuation in the Growth Rate of a Single Crystal.- Modeling the Attrition Process in a22 Liter Draft Tube Crystallizer.- Computational Fluid Dynamics Approach to Precipitation Reactions: The Importance Of Subgrid-Scale Fluctations.- Scaling-up of Reactive Crystallizers.- In-situ Measurement Method of Crystal Concentration in a Seeded Batch Crystallizer.- Monte Carlo Simulation of the Crystal Size Distribution with Attrition Effects in a Mixed Suspension Crystallizer.- A Review of the Crystallization of Sugar.
