Recent advances in computational approaches for two-phase flow motion of so
lid particles, liquid particles, and gas bubbles are reviewed in the contex
t of engineering calculations, The surrounding fluid is assumed to behave i
n a continuum and the dispersed-fluid is assumed to be dilute such that par
ticle-particle interactions and two-way coupling effects can be ignored. Th
e key process considered herein is momentum transfer to the particles with
emphasis on turbulent diffusion. Computational approaches are classified by
their particular treatment of the continuous-phase (surrounding liquid or
gas) and of the dispersed-phase (solid particles, droplets, or bubbles). Th
e most appropriate point-volume descriptions for interphase transfer of mom
entum are described based on current research and experimental data. Modern
Lagrangian and Eulerian treatments of the dispersed-phase motion are then
considered for predicting a variety of particle-fluid physical phenomenon,
Finally, the "tools" (computational techniques) are summarized based on the
"job" (prediction of a particular set of dispersed-phase properties) and t
he "cost" (required computational resources). (C) 2000 Elsevier Science Ltd
. All rights reserved.