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Experimental and Computational Studies of Hydrodynamics in
 Three-Phase and Two-Phase Fluidized Beds - 1994

Bahary, Mitra

Illinois Institute of Technology

Table of Contents 586kb

Acknowledgement 

iii

List of Tables

vii

List of Figures

ix

List of Symbols

x

Abstract 

xiii

Chapter

 

I.

Introduction 180kb

1.1

II.

Description of Experimental Apparatus for Three-Phase Fluidized Bed 352kb

2.1
   

Introduction

2.1

Experimental Apparatus and Procedure

2.2

Visual Observations of Bubble Coalescence and Break up

2.7

III.

Measurements of Volume Fractions in Two-Phase and Three-Phase Fluidized Beds 481kb

3.1
   

Introduction

3.1

Principle of Interpretation

3.1

Calibration of X-ray and y-ray Densitometer

3.3

Flow Regime

3.4

Volume Fractions

3.5

IV.

Power Spectra Analysis of Bubble Frequency 705kb

4.1
   

Introduction

4.1

Experimental Setup and Procedure

4.3

Experimental Concentration Fluctuation and Power Spectra Results

4.4

Computed Concentration Fluctuation and Power Spectra Results

4.21

Conclusion

4.21

V.

Particle Velocity Distribution in Two-Phase and Three-Phase Fluidized Bed 1079kb

5.1
   

Introduction

5.1

Apparatus and Experimental Procedure

5.2

Analysis of Results

5.8

Conclusion

5.23

VI.

Solids Viscosity Measurements in Three-Phase Fluidized Bed 676kb

6.1
   

Introduction

6.1

Experimental Setup and Procedure

6.3

"Apparent" Bed Viscosity

6.6

Shear Stress Analysis

6.13

Granular Temperatures in Three-Phase Fluidized Beds

6.14

Conclusion

6.17

VII.

Description of the Hydrodynamic Model and Simulation 1031kb

7.1
   

Introduction

7.1

Hydrodynamic Model

7.2

Numerical Scheme

7.3

Initial and Boundary Conditions

7.4

Fluidized Bed Simulation

7.6

Results of Numerical Simulation

7.6

Conclusion

7.19

VIII.

Summary and Recommendations 362kb

8.1
   

Summary

8.1

Future Work

8.2

Appendix

 

A.

Volume Fraction Measurement Data 590kb

A.1

B.

Velocity Measurement Data 533kb

B.1

C.

Viscosity Measurement Data 249kb

C.1

D.

Hydrodynamic Model 103kb

D.1
 

References 228kb

R.1