Simulating Multiphase Flow in Chemical & Process
Engineering with TransAT July 2012 ASCOMP www.ascomp.ch
[email protected]
Slide 2
No. of comp. particles: 43815 No. of real particles: 219075
Two-way coupling. Re of flow: ReD = 52400 Mass loading = 0.034 (in
the primary jet). Diameter range: 11-120 microns LES using WALE
Grid: 551.000 Swirling particulate jet mixing CLICK ON MOVIES
Slide 3
TransAT results (intermediate: 0.5m points)
Slide 4
Flow in an impinging micro-jet reactor
Slide 5
Instantaneous vorticity magnitudes: constant inflows (left) and
unsteady asymmetric inflows (right). Instantaneous velocity
magnitudes with 90 ml/min flow rate: constant inflows (left) and
unsteady asymmetric inflows (right). Flow in an impinging micro-jet
reactor
Slide 6
Mean U and V velocity components RMS : u and v components
Comparison unsteady inflows (blue), constant inflows (red) and mPIV
data (symbols). Flow in a confined impinging jet reactor
Slide 7
CLICK ON MOVIES
Slide 8
Flow in a cyclone separator
Slide 9
Slide 10
Multiphase Flow in a Hydrocyclone separator
Slide 11
Porous media represented with particules CLICK ON MOVIES
Slide 12
Droplet cooling (for CIBA Switzerland) THE ISSUES turbulent
flow Particle affecting momentum Particle interacting with wall
Particles exchanging heat Complex configuration Unsteady 240 hole,
600 hole, and 1000 hole configurations
Slide 13
Droplet cooling in gravity towers 22m high tower No. of comp.
particles: 100.000 Two-way coupling momentum and heat. Re of flow:
ReD = 75000 Mass loading = 0.1. Diameter range: 600 microns URANS
& LES Grid: 2000.000 CLICK ON MOVIES
Slide 14
Recommendations
Slide 15
Fluidized beds Variable class of particles Four-way coupling
momentum Accounts for particle packing Accounts for settling CLICK
ON MOVIES
Slide 16
Sedimentation of particle media Variable class of particles
Two-way coupling momentum Accounts for particle packing Accounts
for settling CLICK ON MOVIES
Slide 17
Water Emulsion in Oil Settling Settling of water emulsion in
oil. Model development phase.
