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September 20, 2007, 06:05 |
Dear,
I am trying to run a
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#1 |
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Dear,
I am trying to run a simple case of a liquid bubble moving in another liquid. I use OpenFoam 1.4.1 The DICPCG solver needs about 20 to 300 iterations, right from the start and this does not diminish. I use a very small time step (1e-7). For the solver settings, I used the standard settings of the DamBreak case. My model is simply a pipe system (3D) through which the main fluid flows, including a small pipe inside the larger pipe where the bubbles are injected. Is it normal that the solver needs so many iterations per time step?
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Dr. Ries Bouwman Business Development ESI Group 004369917171525 @riesbouwman |
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September 20, 2007, 14:10 |
First make sure that your cour
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Senior Member
Srinath Madhavan (a.k.a pUl|)
Join Date: Mar 2009
Location: Edmonton, AB, Canada
Posts: 703
Rep Power: 21 |
First make sure that your courant number does not exceed 0.2. Next how bad/good is your mesh? Finally, if everything is going fine except for simulation time, then try using the GAMG solver as opposed to the DICPCG solver.
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