SpringerLink Springer Engineering eBooks 2017 English+International

Preface; Contents; Modeling and Simulation of Discrete Particles in Fluid Flow; 1 Introduction; 2 Motion of Isolated Particles; 2.1 Gas -- Solid Flows; 2.2 Liquid -- Solid Flows; 2.3 Effects of Finite Particles Reynolds Number; 2.4 Lift Forces; 3 Isolated Particles in Simple Flows; 4 Force Coupling Method; 4.1 Stokes Flows; 4.2 Finite Reyonolds Number Flows; 5 Applications to Suspension Flows; 5.1 Particle Settling; 5.2 Couette Flow; 6 Comments; References; Modeling and Simulation of Finite-Size Particles in Turbulence; 1 Introduction; 2 Basics of Turbulence.

2 General Principles3 Origins of Collective Dynamics; 3.1 Chaotic Motion Due to Hydrodynamic Interactions; 3.2 Irreversibilities Due to Contact Interactions; 4 Calculating the Motion of Rods; 4.1 Hydrodynamic Models for Rigid Fibers; 4.2 Slender Body Equation for a Rigid Rod; 4.3 Motion of a Slender Rod; 5 Simulating Rigid Rods; 5.1 Hydrodynamic Interactions; 5.2 Solving for the Collective Dynamics; 5.3 Example Calculation; 5.4 Slender Body Dynamics; 5.5 Lubrication; 5.6 Solving; 6 Collective Dynamics and Chaos; 7 Concluding Comments; References.

2 Turbulent Dispersion of Tracer Particles2.1 The Turbulent Pair Dispersion Problem; 2.2 Batchelor and Richardson Regimes for Pair Dispersion; 2.3 A Simple Ballistic Phenomenology of Turbulent Superdiffusion; 3 Preferential Concentration of Inertial Particles in Turbulence; 3.1 Diagnostics of Preferential Concentration with Voronoï Tessellation; 3.2 Main Properties of Preferential Concentration in Turbulence; 3.3 Origins of Preferential Concentration; 4 Conclusion; References; Collective Dynamics of Particles in Viscous Flows with an Emphasis on Slender Rods; 1 Introduction.

3 Numerical Methods for Finite-Size Particles4 Finite-Size Effects of Individual Particles; 4.1 Slip Velocity; 4.2 Modification of Turbulence; 4.3 Drag Force in Turbulent Flows; 4.4 Sedimenting Particles; 5 Collective Effects of Finite-Size Particles; 5.1 Two Interacting Particles; 5.2 Sedimentation; 5.3 Turbulence Modulation; 6 Concluding Remarks; References; Some Aspects of the Collective Dynamics of Particles in Turbulent Flows; 1 Introduction; 1.1 Particles in Turbulence; 1.2 Some Important Aspects of the Collective Dynamics of Particles in Turbulence.

The book surveys the state-of-the-art methods that are currently available to model and simulate the presence of rigid particles in a fluid flow. For particles that are very small relative to the characteristic flow scales and move without interaction with other particles, effective equations of motion for particle tracking are formulated and applied (e.g. in gas-solid flows). For larger particles, for particles in liquid-solid flows and for particles that interact with each other or possibly modify the overall flow detailed model are presented. Special attention is given to the description of the approximate force coupling method (FCM) as a more general treatment for small particles, and derivations in the context of low Reynolds numbers for the particle motion as well as application at finite Reynolds numbers are provided. Other topics discussed in the book are the relation to higher resolution immersed boundary methods, possible extensions to non-spherical particles and examples of applications of such methods to dispersed multiphase flows.