Simulating Multiphase Flow in Chemical & Process Engineering with TransAT July 2012 ASCOMP

No. of comp. particles: No. of real particles: Two-way coupling. Re of flow: ReD = Mass loading = (in the primary jet). Diameter range: microns LES using WALE Grid: Swirling particulate jet mixing CLICK ON MOVIES

TransAT results (intermediate: 0.5m points)

Flow in an impinging micro-jet reactor

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

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

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Flow in a cyclone separator

Multiphase Flow in a Hydrocyclone separator

Porous media represented with particules CLICK ON MOVIES

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

Droplet cooling in gravity towers 22m high tower No. of comp. particles: Two-way coupling momentum and heat. Re of flow: ReD = Mass loading = 0.1. Diameter range: 600 microns URANS & LES Grid: CLICK ON MOVIES

Recommendations

Fluidized beds Variable class of particles Four-way coupling momentum Accounts for particle packing Accounts for settling CLICK ON MOVIES

Sedimentation of particle media Variable class of particles Two-way coupling momentum Accounts for particle packing Accounts for settling CLICK ON MOVIES

Water Emulsion in Oil Settling Settling of water emulsion in oil. Model development phase.