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April 9, 2014, 07:33 |
Fluent solver
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#1 |
New Member
Adam
Join Date: Dec 2013
Posts: 13
Rep Power: 12 |
Guys, i'm having a pressure-based case with k-epsilon turbulent model which to model air flow from ducting throughout a diffuser (in office or class).
how do i decide my solution solver? (simple, simplec, piso?) and how many iteration do i need? |
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April 9, 2014, 10:31 |
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#2 |
New Member
Praveen Kumar R
Join Date: Apr 2014
Location: Pune, India
Posts: 19
Rep Power: 12 |
Hi,
SIMPLE, SIMPLEC & PISO are algorithms available in FLUENT to do pressure-velocity coupling. This is to describe how the momentum and continuity equations are coupled. SIMPLE (default) is most robust SIMPLEC - Quicker for simple problems PISO - Quicker for unsteady flows & Stable for highly skewed meshes If your flow is compressible, then you should consider using COUPLED. For most of the cases, SIMPLE algorithm works fine. Happy Learning!!! Praveen Kumar R |
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April 15, 2014, 05:53 |
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#3 | |
New Member
Adam
Join Date: Dec 2013
Posts: 13
Rep Power: 12 |
Quote:
and i wonder on the iteration setup, how do we know or approximate value of iterations to make sure that the calculation is going to reach the exact value? from my case above i'm running up to 3000 iterations, is it consider to be good or not enough? (to approaching exact values) |
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