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Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX November 3, 2017, 04:07

Replies: 17 Transient Simulation Taking Very Long TIME!!!! Help Views: 7,640 Posted By ghorrocks Also have a look at the porous media expert... Also have a look at the porous media expert parameters and detailed settings. There are some alternate solver options which may converge better. Also note finer meshes tend to be hard to converge,...

Forum: CFX November 2, 2017, 16:43

Replies: 17 Transient Simulation Taking Very Long TIME!!!! Help Views: 7,640 Posted By ghorrocks Here is some ideas: * Get more parallel... Here is some ideas: * Get more parallel licenses * Look at the simulation and work out why somewhere is having problems converging. * Improve mesh quality. Better mesh = better convergence =...

Forum: CFX March 10, 2011, 06:19

Replies: 17 Transient Simulation Taking Very Long TIME!!!! Help Views: 7,640 Posted By ghorrocks Why not start off with minimum 1e-20 and maximum... Why not start off with minimum 1e-20 and maximum 1e20? Then let it find what ever time step works. If it starts getting silly you should stop it and fix the problem (in this case the problem is...

Forum: CFX March 9, 2011, 18:43

Replies: 17 Transient Simulation Taking Very Long TIME!!!! Help Views: 7,640 Posted By ghorrocks Looks good. The only point is the first update... Looks good. The only point is the first update time and max and min timesteps. Make sure these are wide enough so you do not hit the limits in the normal course of events.

Forum: CFX March 8, 2011, 17:00

Replies: 17 Transient Simulation Taking Very Long TIME!!!! Help Views: 7,640 Posted By ghorrocks Adaptive time stepping on Courant number is not... Adaptive time stepping on Courant number is not very helpful, unless you have shown the Courant Number you selected is relevant to your flow. In general the best approach is to use adaptive time...

Forum: CFX March 7, 2011, 17:26

Replies: 17 Transient Simulation Taking Very Long TIME!!!! Help Views: 7,640 Posted By ghorrocks Courant number is not really a good way of... Courant number is not really a good way of looking at an implicit solver. It does not tell you much. To comment on Prof Chaos' comments: Yes, lowing timestep will increase accuracy but it...

Showing results 1 to 6 of 6

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