|May 13, 2016, 03:58||
twoPhaseEulerFoam (very) high pressure when using kinetic theory
Ruben Di Battista
Join Date: May 2013
Posts: 100Rep Power: 5
I'm basically simulating a slurry flow with solid particles in a liquid carrier. I managed to run simulation with different turbulent models for the liquid carrier (basically k-w SST and std. k-epsilon) getting reasonable velocity profiles and pressure drops.
In most of the papers I'm trying to emulate (i.e. CFD modeling for pipeline flow of fine particles at high concentration - Kaushal et al.) they use kinetic-theory for granular flow.
I tried to enable it but I get a practically laminar profile for the solid phase.
Here an image that compares the two velocity profiles with same volume fraction (13%), inlet velocity (1.5), particle diameter (1.3mm), k-w for carrier and in the red profile I used the kinetic-theory for granular flows with equilibrium hypothesis.
Pipe Diameter: 15e-3 [m]
Pipe Length: 0.6 [m]
Gravity: [0 0 -9.81]
Position of the sample line: 0.4 [m] from the inlet
Liquid Carrier Density: 870 [Kg/m³]
Liquid Carrier Viscosity: 0.292E-3 [Pa s]
Dispersed Phase Density: 1026 [Kg/m³]
Dispersed Phase Viscosity: 0.292E-3 [Pa s]
(Case naming system: 15_13_kw_keq:
An help would be very appreciated, thanks...
Here is my case too:
Last edited by tidusuper91; May 20, 2016 at 04:53.
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