Granular mixing visualization and quantification in a double screw mixer

....................................................................................................................xxx CHAPTER 1: INTRODUCTION ........................................................................................1 1.1 Motivation ...................................................................................................................1 1.2 Goal and Objectives ....................................................................................................2 1.3 Practical Applications .................................................................................................4 1.4 Outline ........................................................................................................................5 CHAPTER 2: LITERATURE REVIEW .............................................................................7 2.1 Granular Mixing .........................................................................................................7 2.1.1 Single Phase and Multiphase Flows .....................................................................7 2.1.2 Terminology ..........................................................................................................9 2.1.3 History of Granular Mixing ................................................................................10 2.1.4 Importance ..........................................................................................................11 2.1.5 Granular Rheology ..............................................................................................12 2.1.6 Mixing Classification ..........................................................................................13 2.1.7 Mixing and Segregation ......................................................................................15 2.1.7.1 Mixing mechanisms ......................................................................................18 2.1.7.1.1 Diffusive Mixing .....................................................................................18 2.1.7.1.2 Shear Mixing ...........................................................................................19 2.1.7.1.3 Convective Mixing..................................................................................19 2.1.7.2 Rate of Mixing ..............................................................................................19 2.1.7.3 Particle Property Effects on Segregation ......................................................20 2.1.7.3.1 Particle Size ............................................................................................23 2.1.7.3.1.1 Trajectory segregation ......................................................................25 2.1.7.3.1.2 Segregation by Percolation ...............................................................25