IUTAM Symposium on Computational Approaches to Multiphase Flow: Proceedings of an IUTAM Symposium held at Argonne National Laboratory, October 4-7, 2004 (Fluid Mechanics and Its Applications Book 81)

The book provides a broad overview of the full spectrum of state-of-the-art computational activities in multiphase flow as presented by top practitioners in the field. Starting with well-established approaches (point-particle models, volume-of-fluid, level set, and front capturing for free-surface flows) it builds up to newer methods for large-eddy simulations, extended particles in Navier-Stokes flows, the lattice-Boltzmann method, molecular dynamics techniques and compressible flows with shock waves. These methods are illustrated with applications to a broad spectrum of problems involving particle dispersion and deposition, turbulence modulation, environmental flows, fluidized beds, bubbly flows, and many others. TABLE OF CONTENTS......Page 6 PREFACE......Page 10 PART I: POINT PARTICLE APPROACH......Page 12 An Updated Classification Map of Particle-Laden Turbulent Flows......Page 13 On Fluid-Particle and Particle-Particle Interactions in Gas-Solid Turbulent Channel Flow......Page 21 Simulation of Particle Diffusion, Segregation, and Intermittency in Turbulent Flows......Page 31 Use of a Stochastic Method to Describe Dispersion and Deposition in an Idealized Annular Flow......Page 41 On Momentum Coupling Methods for Calculation of Turbulence Attenuation in Dilute Particle-Laden Gas Flows......Page 49 Multifractal Concentrations of Heavy Particles in Random Flows......Page 53 Turbulence Modulation by Micro-Particles in Boundary Layers......Page 63 Stochastic Diffusion of Finite Inertia Particles in Non-Homogeneous Turbulence......Page 73 Accumulation of Heavy Particles in Bounded Vortex Flow......Page 85 PART II: LATTICE-BOLTZMANN AND MOLECULAR DYNAMIC SIMULATIONS......Page 96 A Numerical Study of Planar Wave Instabilities in Liquid-Fluidized Beds......Page 97 Lattice Boltzmann Simulations to Determine Forces Acting on Non-Spherical Particles......Page 107 Molecular Dynamics Simulations of Drop Motion on Uniform and Non-Uniform Solid Surfaces......Page 117 Fluctuating Immersed Material (FIMAT) Dynamics for the Direct Simulation of the Brownian Motion of Particles......Page 127 A Novel Definition of the Local and Instantaneous Liquid–Vapor Interface......Page 138 PART III: FULLY-RESOLVED MULTI-PARTICLE SIMULATIONS......Page 148 DNS of Collective Behavior of Solid Particles in a Homogeneous Field – Influence of Reynolds Number, Loading Ratio and Particle Rotation......Page 149 Proteus – A New Computational Scheme for Deformable Particles and Particle Interaction Problems......Page 159 An Explicit Finite-Difference Scheme for Simulation of Moving Particles......Page 168 Use of Variable-Density Flow Solvers for Fictitious-Domain Computations of Dispersed Solid Particles in Liquid Flow......Page 178 3D Unsteady Simulation of Particle Sedimentation towards High Regimes......Page 189 Microstructural Effects in a Fully-Resolved Simulation of 1,024 Sedimenting Spheres......Page 201 A DNS Approach Dedicated to the Analysis of Fluidized Beds......Page 211 Performance of Various Fluid-Solid Coupling Methods for DNS of Particulate Flow......Page 219 Numerical Study of Particle Migration in Tube and Plane Poiseuille Flows......Page 228 New Advances in Force-Coupling Method: From Micro to Macro......Page 239 Treatment of Particle Collisions in Direct Numerical Simulations of High Speed Compressible Flows......Page 249 PART IV: FREE SURFACE FLOWS, DROPS AND BUBBLES......Page 262 Struggling with Boundary Layers and Wakes of High-Reynolds-Number Bubbles......Page 263 Direct Numerical Simulations of Bubbly Flows......Page 272 Direct Numerical Simulation of Droplet Formation and Breakup......Page 281 A Sharp-Interface Cartesian Grid Method for Computations of Droplet Impact and Spreading on Surfaces of Arbitrary Shape......Page 291 A Finite-Volume/Front-Tracking Method for Computations of Multiphase Flows in Complex Geometries......Page 299 The Effect of Surfactant on Rising Bubbles......Page 309 Numerical Simulation of Shock Propagation in Bubbly Liquids by the Front Tracking Method......Page 320 Large-Eddy Simulation of Steep Water Waves......Page 328 Adaptive Characteristics-Based Matching (aCBM): A Method for Interfacial Dynamics in Compressible Multiphase Flows......Page 338 Compressible Multi-Hydrodynamics (CMH): Breakup, Mixing, and Dispersal of Liquids/Solids in High Speed Flows......Page 350 PART V: LARGE EDDY SIMULATIONS, APPLICATIONS AND OTHER PHYSICS......Page 367 On Stochastic Modeling of Heavy Particle Dispersion in Large-Eddy Simulation of Two-Phase Turbulent Flow......Page 368 Flow of Bubbly Liquids in a Vertical Pipe: Theory and Experiments......Page 376 Effect of Particle Inertia in Particulate Density Currents......Page 388 Modeling Finite-Size Effects in LES/DNS of Two-Phase Flows......Page 398 Lagrangian Aspects to Multiphase Flows......Page 408 Effect of Fluid Velocity Fluctuations on the Dynamics of a Sheared Gas-Particle Suspension......Page 418 Prediction of Particle Laden Turbulent Channel Flow Using One-Dimensional Turbulence......Page 427 P......Page 436 Z......Page 437 L......Page 438 W......Page 439 The book provides a broad overview of the full spectrum of state-of-the-art computational activities in multiphase flow as presented by top practitioners in the field. It starts with well-established approaches and builds up to newer methods. These methods are illustrated with applications to a broad spectrum of problems involving particle dispersion and deposition, turbulence modulation, environmental flows, fluidized beds, bubbly flows, and many others. Provides an overview of the computational activities in multiphase flow as presented by top practitioners in the field. This book discusses methods for large-eddy simulations, extended particles in Navier-Stokes flows, the lattice-Boltzmann method, molecular dynamics techniques and compressible flows with shock waves