Ebook: Fluid Mechanics of Mixing: Modelling, Operations and Experimental Techniques

This volume is a selection of the material presented at the 7th European Mixing Congress. It is concerned exclusively with mixing in circular section vessels, using centrally mounted paddles or similar impellers. The contents are arranged under three classifications: Modelling of Mixing Processes, Mixing Operations and Experimental Techniques. The classifications result in the original material appearing in a different order to that of the Congress. This arrangement is intended to assist the reader in identifying the topic area by function or application, rather than by technology. In this book the section on Modelling contains papers which focus on the representation of the mixing process, whether by equation, scale-up criteria, or fluid dynamic simulation. Similarly, Mixing Operations are concerned with the application or function of the mixing process, such as mass transfer, heat transfer or mixing time. Experimental Techniques addresses the tools the researcher needs to use at the data gathering experimental stage. It collects together advances made in the various methods used by some of the foremost researchers, and indicates those areas still in need of additional instrumentation or methods of data reduction. The book is intended for researchers, designers and users of mixing equipment, and for those planning research and development programmes and who wish to keep up to date with advances in the basic technology and its applications.

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This volume is a selection of the edited papers presented at the 7th European Mixing Congress. It is concerned exclusively with mixing in circular section vessels, using centrally mounted paddles or similar impellers.
The contents are arranged under three classifications: Modelling of Mixing Processes, Mixing Operations, and Experimental Techniques. This arrangement will assist the reader in identifying the topic area by function or application, rather than by technology.
In this volume the sections on Modelling contain papers which focus on the representation of the mixing process, whether by equation, scale-up criteria, or fluid dynamic simulation. Similarly, Mixing Operations are concerned with the application or function of the mixing process, such as mass transfer, heat transfer or mixing time. Experimental Techniques addresses the tools the researcher needs to use at the data gathering experimental stage. It collects together advances made in the various methods used by some of the foremost researchers, and indicates those areas still in need of additional instrumentation or methods of data reduction.
The volume will be of interest to engineering researchers, designers and users of mixing equipment, and to those planning research and development programmes, who wish to keep up to date with advances in the basic technology and its applications.

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This volume is a selection of the edited papers presented at the 7th European Mixing Congress. It is concerned exclusively with mixing in circular section vessels, using centrally mounted paddles or similar impellers.
The contents are arranged under three classifications: Modelling of Mixing Processes, Mixing Operations, and Experimental Techniques. This arrangement will assist the reader in identifying the topic area by function or application, rather than by technology.
In this volume the sections on Modelling contain papers which focus on the representation of the mixing process, whether by equation, scale-up criteria, or fluid dynamic simulation. Similarly, Mixing Operations are concerned with the application or function of the mixing process, such as mass transfer, heat transfer or mixing time. Experimental Techniques addresses the tools the researcher needs to use at the data gathering experimental stage. It collects together advances made in the various methods used by some of the foremost researchers, and indicates those areas still in need of additional instrumentation or methods of data reduction.
The volume will be of interest to engineering researchers, designers and users of mixing equipment, and to those planning research and development programmes, who wish to keep up to date with advances in the basic technology and its applications.
Content:
Front Matter....Pages i-xi
Front Matter....Pages 1-1
Effect of Macromixing on a Competitive/Consecutive Reaction in a Semi-Batch Stirred Reactor: Paul’s Iodination Experiments Interpreted by Networks-of-Zones....Pages 3-10
The Variation of Flow Pattern and Mixing Time with Impeller Spacing in Stirred Vessels with Two Rushton Impellers....Pages 11-18
Development of Transitional Flow Mixing Impeller....Pages 19-26
Distribution of Turbulence Characteristics in Agitated System with Axial High-Speed Impeller and Baffles....Pages 27-35
A Computational Study on Dispersing Gas in a Stirred Reactor....Pages 37-45
Measurements and Modelling of Flow in Gas Sparged, Agitated Vessels....Pages 47-53
Simple Performance Correlations for Agitated Vessels....Pages 55-63
Gradients in Production Scale Bioreactors....Pages 65-72
Solid Distribution in Slurry Reactors Stirred with Multiple Impellers: Continuous Flow Systems....Pages 73-80
Front Matter....Pages 81-81
The Mixing of Miscible Liquids with Large Differences in Density and Viscosity....Pages 83-90
Power Input and Gas Hold up in Gas Liquid Dispersions Agitated by Axial Flow Impellers....Pages 91-98
Improving Xanthan Fermentation Performance by Changing Agitators....Pages 99-105
Determination of the Mean Specific Power Input in Stirred Vessels with Suspensions....Pages 107-115
A Comparison of the Efficiency of Five Agitator Designs for Solids Suspension Duties at High Solids Concentrations....Pages 117-130
The Design of Agitated Dissolution Tanks....Pages 131-138
Modelling and Control of Multistage Mixer Extractors....Pages 139-144
Local Measurements of Liquid and Solid Velocities and of Particle Sizes in Stirred Suspensions with a Phase Doppler Particle Analyser....Pages 145-152
Hydrodynamic Characteristics of a Gas-Inducing Impeller....Pages 153-161
Heat Transfer in Mechanically Stirred Gas — Liquid System....Pages 163-171
Heat and Mass Transfer Efficiencies of Multi-Impeller Gas-Viscous Liquids Contactors....Pages 173-179
Front Matter....Pages 181-181
Measurement of Concentration Fluctuations during Mixing in a Stirred Tank and in a Channel Flow by Laser Induced Fluorescence Spectroscopy....Pages 183-190
Reynolds Stresses and Stirring Regimes of a Rushton Turbine....Pages 191-196
Micromixing Behaviour in a Batch Vessel with Several Impellers Using Alkali-Fluorescent Dye System....Pages 197-205
An Experimental Study of Micromixing Using Two Parallel Reactions....Pages 207-215
LDA Measurements of Flow in Stirred Gas-Liquid Reactors....Pages 217-224
A Study of Ventilated Gas Cavities on Disc-Turbine Blades....Pages 225-231
Numerical Particle Tracking in a Turbine Agitated Vessel....Pages 233-245
Residence Time Distribution of Solid and Liquid Phase in a Stirred Tank Reactor....Pages 247-251
Local Wall Heat Transfer Coefficients Using Surface Calorimeters....Pages 253-261
Back Matter....Pages 263-269

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This volume is a selection of the edited papers presented at the 7th European Mixing Congress. It is concerned exclusively with mixing in circular section vessels, using centrally mounted paddles or similar impellers.
The contents are arranged under three classifications: Modelling of Mixing Processes, Mixing Operations, and Experimental Techniques. This arrangement will assist the reader in identifying the topic area by function or application, rather than by technology.
In this volume the sections on Modelling contain papers which focus on the representation of the mixing process, whether by equation, scale-up criteria, or fluid dynamic simulation. Similarly, Mixing Operations are concerned with the application or function of the mixing process, such as mass transfer, heat transfer or mixing time. Experimental Techniques addresses the tools the researcher needs to use at the data gathering experimental stage. It collects together advances made in the various methods used by some of the foremost researchers, and indicates those areas still in need of additional instrumentation or methods of data reduction.
The volume will be of interest to engineering researchers, designers and users of mixing equipment, and to those planning research and development programmes, who wish to keep up to date with advances in the basic technology and its applications.
Content:
Front Matter....Pages i-xi
Front Matter....Pages 1-1
Effect of Macromixing on a Competitive/Consecutive Reaction in a Semi-Batch Stirred Reactor: Paul’s Iodination Experiments Interpreted by Networks-of-Zones....Pages 3-10
The Variation of Flow Pattern and Mixing Time with Impeller Spacing in Stirred Vessels with Two Rushton Impellers....Pages 11-18
Development of Transitional Flow Mixing Impeller....Pages 19-26
Distribution of Turbulence Characteristics in Agitated System with Axial High-Speed Impeller and Baffles....Pages 27-35
A Computational Study on Dispersing Gas in a Stirred Reactor....Pages 37-45
Measurements and Modelling of Flow in Gas Sparged, Agitated Vessels....Pages 47-53
Simple Performance Correlations for Agitated Vessels....Pages 55-63
Gradients in Production Scale Bioreactors....Pages 65-72
Solid Distribution in Slurry Reactors Stirred with Multiple Impellers: Continuous Flow Systems....Pages 73-80
Front Matter....Pages 81-81
The Mixing of Miscible Liquids with Large Differences in Density and Viscosity....Pages 83-90
Power Input and Gas Hold up in Gas Liquid Dispersions Agitated by Axial Flow Impellers....Pages 91-98
Improving Xanthan Fermentation Performance by Changing Agitators....Pages 99-105
Determination of the Mean Specific Power Input in Stirred Vessels with Suspensions....Pages 107-115
A Comparison of the Efficiency of Five Agitator Designs for Solids Suspension Duties at High Solids Concentrations....Pages 117-130
The Design of Agitated Dissolution Tanks....Pages 131-138
Modelling and Control of Multistage Mixer Extractors....Pages 139-144
Local Measurements of Liquid and Solid Velocities and of Particle Sizes in Stirred Suspensions with a Phase Doppler Particle Analyser....Pages 145-152
Hydrodynamic Characteristics of a Gas-Inducing Impeller....Pages 153-161
Heat Transfer in Mechanically Stirred Gas — Liquid System....Pages 163-171
Heat and Mass Transfer Efficiencies of Multi-Impeller Gas-Viscous Liquids Contactors....Pages 173-179
Front Matter....Pages 181-181
Measurement of Concentration Fluctuations during Mixing in a Stirred Tank and in a Channel Flow by Laser Induced Fluorescence Spectroscopy....Pages 183-190
Reynolds Stresses and Stirring Regimes of a Rushton Turbine....Pages 191-196
Micromixing Behaviour in a Batch Vessel with Several Impellers Using Alkali-Fluorescent Dye System....Pages 197-205
An Experimental Study of Micromixing Using Two Parallel Reactions....Pages 207-215
LDA Measurements of Flow in Stirred Gas-Liquid Reactors....Pages 217-224
A Study of Ventilated Gas Cavities on Disc-Turbine Blades....Pages 225-231
Numerical Particle Tracking in a Turbine Agitated Vessel....Pages 233-245
Residence Time Distribution of Solid and Liquid Phase in a Stirred Tank Reactor....Pages 247-251
Local Wall Heat Transfer Coefficients Using Surface Calorimeters....Pages 253-261
Back Matter....Pages 263-269
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