Bubbles, Drops, and Particles in Non-Newtonian Fluids provides thorough coverage of the scientific foundations and the latest advances in particle motion in non-Newtonian media.

Features:

• Highlights the formation, breakage, and coalescence of bubbles and drops moving in non-Newtonian fluids as encountered in spraying or in multiphase reactors or in the production of foams and emulsions
• Explains non-Newtonian effects in boundary layer flows and on the interphase heat/mass transfer from particles immersed in a variety of non-Newtonian fluids
• Elucidates the effects of confining walls on the sedimentation of particles
• Details the hydrodynamic behavior of single, spherical or non-spherical, rigid, or fluid particles in visco-plastic and visco-elastic media
• Clarifies how single- and two-phase flows behave with a non-Newtonian liquid phase in granular and fibrous porous media
• Covers new topics such as wall effects and falling object rheometry for quality control in a range of manufacturing industries

Contents

Non-Newtonian Fluid Behavior

• Definition of a Newtonian Fluid
• Non-Newtonian Fluids: Definition, Examples of Different Types, Mathematical Models
• Dimensional Considerations in the Mechanics of Viscoelastic Fluids
• Experimental Techniques: Rheometry

Rigid Particles in Time-Independent Fluids Without a Yield Stress

• Governing Equations for a Sphere
• Spherical Particles in Newtonian Fluids
• Spheres in Shear-thinning Fluids
• Spheres in Shear-thickening Fluids
• Light Spheres Rising in Pseudoplastic Media
• Pressure Drop due to a Settling Sphere
• Non-Spherical Particles

Rigid Particles in Viscoplastic Fluids

• Static Equilibrium of Particles
• Flow Field: Shape and size of flow zones
• Drag Force
• Role of Values of Yield stress used in correlations
• Time Effects

Rigid Particles in Viscoelastic Fluids

• Flow over a sphere
• Flow over a cylinder
• Other Studies Involving Interactions Between Non-Newtonian Characteristics, Particle Shape, Flow Field, etc.

Fluid Particles in Non-Newtonian Media

• Formation of Fluid Particles
• Shapes of Bubbles and Drops in Free Rise or Fall
• Terminal Velocity-Volume Behavior in Free Motion
• Drag Behavior of Single Particles
• Bubble and Drops Ensembles in Free Motion
• Coalescence of Bubbles and Drops
• Breakage of Drops
• Motion and Deformation of Bubbles and Drops in Confined Flows

Non-Newtonian Fluid Flow in Porous Media and Packed Beds

• Porous Medium Definition, Examples and Characterization
• Flow of Newtonian Fluids
• Flow of Non-Newtonian Fluids
• Miscellaneous Effects
• Two Phase Gas/Liquid Flow

Fluidization and Hindered Settling

• Two-Phase Fluidization
• Sedimentation or Hindered Settling
• Three Phase Fluidized Beds

Momentum, Heat and Mass Transfer in Boundry Layer Flows

• Boundary Layer Flows
• Viscoelastic Effects in Boundary Layers
• Mass Transfer from Bubbles
• Mass Transfer from Drops
• Mass Transfer from Ensembles of Bubbles and Drops
• Heat and Mass Transfer in Fixed Beds
• Heat and Mass Transfer in Fluidized Beds
• Heat and Mass Transfer in Three Phase Fluidized Beds
• Heat Transfer from Tube Bundles

Wall Effects

• For Rigid Spheres
• For Non-Spherical Particles
• For Drops and Bubbles

Falling Object Rheometry

• Falling Ball Method
• Rolling Ball Method
• Rotating Sphere Viscometer
• Falling Cylinder Viscometer

Index

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