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mesh size in Eulerian multiphase flow - liquid/solid mixture |
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April 3, 2011, 21:15 |
mesh size in Eulerian multiphase flow - liquid/solid mixture
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#1 |
New Member
Join Date: Mar 2009
Posts: 7
Rep Power: 17 |
Hello,
I am considering a solid-liquid mixture multiphase flow in pipe flow. If a solid particle diameter is 10 micron, does the mesh size should be smaller than the particle dimater in the Eulerian multiphase flow model? Thank you in advance! |
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April 4, 2011, 08:09 |
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#2 |
Senior Member
Max
Join Date: Mar 2009
Posts: 133
Rep Power: 17 |
Definately not. The main intention of eulerian method is to avoid the exact spatial resolution of the secondary phase but to model the dynamics and phase-interaction using several complex correlations. However, your mesh should at least resolve all features of the primary phase flow dynamics.
cheers |
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April 4, 2011, 18:19 |
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#3 |
New Member
Join Date: Mar 2009
Posts: 7
Rep Power: 17 |
Thank you, coglione.
It helps me a lot. Have a good one. |
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June 10, 2014, 12:53 |
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#4 |
New Member
SANKET
Join Date: Aug 2013
Posts: 2
Rep Power: 0 |
Hello,
I am simulating multiphase flow over airfoil. For single phase flow simulation using trans SST model at Re=500000, I have to make the first node point distance from airfoil wall to be 10^-6 m. The results are within 5 % error. When I am simulating (using same mesh) multiphase flow with particles of dia. 10^-4 using mixture model with 1% volumetric concentration, the solution is diverging. Is it because my mesh size near the airfoil is smaller than the particle size? |
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December 23, 2016, 13:55 |
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#5 |
New Member
Jose Carlos
Join Date: May 2013
Posts: 6
Rep Power: 13 |
Hi Shaha,
have you found out more information about multi-phase fluid-solid models where regions of the domain with the mesh cell size being smaller then the particle size for correct resolving of the continuous phase equations? Thanks, J |
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