Powder Flow : Theory Characterisation and Application Cover Contents Chapter 1 Introduction References Chapter 2 Flow Related Properties of Bulk Particulate Systems 2.1 Introduction 2.2 Compressibility Response 2.2.1 Large Particles or Sand like Bulk Solids 2.2.2 Fine or Wet Particles 2.3 The Concept of Unconfined Yield Stress 2.4 Flow function Response 2.5 Frictional Properties 2.5.1 The Mohr Coulomb Criterion 2.5.2 Measurements of Bulk Material Properties 2.5.3 Wall Friction 2.6 Fluidisation Properties 2.7 Single Particle and Environmental Properties and Their Impact on Bulk Behaviour 2.7.1 Particle Size Shape and Roughness 2.7.2 Particle Size Distribution 2.7.3 Single Particle Cohesion 2.8 Density (Single Particle True Envelope and Loose Tapped and Compressed Bulk) 2.9 Concluding Remarks Acknowledgements References Chapter 3 Prevailing Conditions of Flow in Particulate Systems 3.1 Introduction 3.2 Stresses in Containers 3.2.1 Bulk Solid Stress Versus the Liquid Hydrostatic Pressure 3.2.2 Estimation of Stress in a Straight Section 3.2.3 The Rankine States 3.2.4 Walters Switch Stress Analysis 3.3 Strain Rate Dependency 3.3.1 Static Regime 3.3.2 Quasi static Regime 3.3.3 Intermediate Flow Regime 3.3.4 Rapid Granular Flow Regime 3.4 Effects of Environmental Conditions on Powder Flow 3.4.1 Temperature 3.4.2 Relative Humidity 3.4.3 Electrostatics 3.5 Time Consolidation and Creep Effect 3.5.1 Time Consolidation 3.5.2 Mechanisms of Creep 3.5.3 Macroscopic Creep Effects 3.5.4 Preventing Creep 3.6 Concluding Remarks References Chapter 4 Bulk Powder Flow Characterisation Techniques 4.1 Introduction 4.2 Static Methods 4.2.1 Angles of Repose 4.2.2 Bulk Density Ratios (BDRs) 4.3 Dynamic Methods 4.3.1 Flow Through Orifices. Powder flow has attracted increased attention in recent years. This book stands out by not only providing the reader with guidance on what to measure but also how to interpret results.