Together with turbulence, multiphase flow remains one of the most challenging areas of computational mechanics and experimental methods and numerous problems remain unsolved to date. Multiphase flows are found in all areas of technology, at all length scales and flow regimes. The fluids involved can be compressible or incompressible, linear or nonlinear. Because of the complexity of the problems, it is often essential to utilize advanced computational and experimental methods to solve the complex equations that describe them. Challenges in these simulations include modelling and tracking interfaces, dealing with multiple length scales, modelling nonlinear fluids, treating drop breakup and coalescence, characterizing phase structures, and many others. Experimental techniques, although expensive and difficult to perform, are essential to validate models. This book contains papers presented at the Fifth International Conference on Computational Methods in Multiphase Flow, which are grouped into the following topics: Multiphase Flow Simulation; Interaction of Gas, Liquids and Solids; Turbulent Flow; Environmental Multiphase Flow; Bubble and Drop Dynamics; Flow in Porous Media; Heat Transfer; Image Processing; Interfacial Behaviour.
Author(s): A. A. Mammoli, A. A. Mammoli, C. A. Brebbia
Edition: 1
Publisher: WIT Press
Year: 2009
Language: English
Pages: 545
Tags: Механика;Механика жидкостей и газов;
Cover......Page 1
COMPUTATIONAL METHODS IN MULTIPHASE FLOW V......Page 2
Copyright Page......Page 11
Preface......Page 12
Contents......Page 14
Section 1: Multiphase flow simulation......Page 20
3D Eulerian simulation of a gas-solid bubbling fluidized bed: assessment of drag coefficient correlations......Page 22
Computational and experimental methods for the on-line measurement of the apparent viscosity of a crystal suspension......Page 34
Two-phase flow modelling within expansion and contraction singularities......Page 46
Numerical simulation of gas-solid flow in ducts by CFD techniques......Page 64
Modelling of solidification of binary fluids with non-linear viscosity models......Page 74
A simulation of the coupled problem of magnetohydrodynamics and a free surface for liquid metals......Page 86
Ammonia concentration analysis for the steam condenser by combining two phase flow CFD simulation with condensation and process simulation......Page 96
An approach to the prediction of wax and asphaltene deposition in a pipeline based on Couette device experimental data......Page 104
Large amplitude waves in a slug tracking scheme......Page 118
Numerical simulation of an intermediate sized bubble rising in a vertical pipe......Page 130
Modelling of stratified two phase flows using an interfacial area density model......Page 142
Multi-phase mixture modelling of nucleate boiling applied to engine coolant flows......Page 154
On the application of Mesoscopic Eulerian Formalism to modulation of turbulence by solid phase......Page 166
VOF-based simulation of conjugate mass transfer from freely moving fluid particles......Page 176
Computational fluid dynamic as a feature to understand the heat and mass transfer in a vacuum tower......Page 188
Understanding segregation and mixing effects in a riser using the quadrature method of moments......Page 200
Numerical simulation of heavy oil flows in pipes using the core-annular flow technique......Page 212
Simulation of flow and modelling the residence time distribution in a continuous two impinging liquid-liquid streams reactor using the Monte Carlo Technique......Page 224
Section 2: Interaction of gas, liquids and solids......Page 234
Vortex study on a hydraulic model of Godar-e-Landar Dam and Hydropower Plant......Page 236
Minimum fluidization velocity, bubble behaviour and pressure drop in fluidized beds with a range of particle sizes......Page 246
Section 3: Turbulent flow......Page 258
Mathematical modelling on particle diffusion in fluidised beds and dense turbulent two-phase flows......Page 260
A numerical study of the scale effects affecting the evolution and sediment entrainment capacity of a gravity current, propagating over a loose bed containing large-scale roughness elements......Page 270
Effect of relative motion between bubbles and surrounding liquid on the Reynolds stress as a mechanism controlling the radial gas holdup distribution......Page 282
Velocity and turbulence measurements of oil-water flow in horizontal and slightly inclined pipes using PIV......Page 296
Section 4: Environmental multiphase flow......Page 312
Meandering of a particle-laden rivulet......Page 314
Experimental study on the rheological behaviour of debris flow material in the Campania region......Page 324
Experimental and numerical investigation of mixed flow in a gallery......Page 336
Sediment transport via dam-break flows over sloping erodible beds......Page 348
Section 5: Bubble and drop dynamics......Page 360
Hydrodynamic drag and velocity of micro-bubbles in dilute paper machine suspensions......Page 362
Effects of physical properties on the behaviour of Taylor bubbles......Page 374
Numerical simulation of one-dimensional mixed flow with air/water interaction......Page 386
Geometry effects on the interaction of two equal-sized drops in simple shear flow at finite Reynolds numbers......Page 398
Section 6: Flow in porous media......Page 408
Modelling the tide effects in groundwater......Page 410
Modelling of diffusion in porous structures......Page 418
Measurement and prediction for air flow drag in different packing materials......Page 428
CFD simulation with multiphase flows in porous media and open mineral storage pile......Page 440
Powered addition applied to the fluidisation of a packed bed......Page 450
Section 7: Heat transfer......Page 462
Tube bundle's cooling by aqueous foam......Page 464
Desulfurization of heavy crude oil by microwave irradiation......Page 474
Section 8: Image processing......Page 486
Reconstruction of a three-dimensional bubble surface from high-speed orthogonal imaging of dilute bubbly flow......Page 488
Experimental investigation of a 2d impinging jet on a liquid surface......Page 526
Section 9: Interfacial behaviour......Page 512
LBM simulation of interfacial behaviour of bubbles flow at low Reynolds number in a square microchannel......Page 514
M......Page 540
Z......Page 541
