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Showing results 1 to 7 of 7 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX April 23, 2015, 18:25

Replies: 20 Transient solution not oscillating Views: 3,989 Posted By ghorrocks That should work fine. That should work fine.

Forum: CFX April 20, 2015, 05:41

Replies: 20 Transient solution not oscillating Views: 3,989 Posted By ghorrocks If it is convergence it will be the imbalances... If it is convergence it will be the imbalances which are better convergence criteria then the residuals. So I would recommend activating the imbalances as a convergence criteria. But if you are...

Forum: CFX December 19, 2011, 05:45

Replies: 20 Transient solution not oscillating Views: 3,989 Posted By ghorrocks Christmas was invented as a gift to CFD engineers... Christmas was invented as a gift to CFD engineers to run those really long simulations you never get enough CPU time to run normally. Just make sure the cleaners don't knock the power cord.

Forum: CFX December 16, 2011, 15:13

Replies: 20 Transient solution not oscillating Views: 3,989 Posted By ghorrocks Absolutely not. You will gt rubbish. You need a... Absolutely not. You will gt rubbish. You need a 3D mesh, or at least a mesh with enough depth in z that it can capture a couple of the largest turbulent structures.

Forum: CFX December 12, 2011, 17:21

Replies: 20 Transient solution not oscillating Views: 3,989 Posted By ghorrocks Correct. And this is likely to be grid and time... Correct. And this is likely to be grid and time step dependant. This is not a good basis for doing accurate simulations. If the oscillations are what you want then you should use a model designed...

Forum: CFX December 10, 2011, 06:00

Replies: 20 Transient solution not oscillating Views: 3,989 Posted By ghorrocks The whole idea of turbulence models is they... The whole idea of turbulence models is they average out the turbulent fluctuations and leave a steady state bulk flow. This may be what is stopping the oscillations. What oscillates anyway? The...

Forum: CFX December 8, 2011, 16:32

Replies: 20 Transient solution not oscillating Views: 3,989 Posted By ghorrocks Is this an FSI simulation or is the geometry... Is this an FSI simulation or is the geometry fixed? What is the geometry? To get oscillations you need high order numerics and good convergence. Can you attach your CCL file? If the oscillation...

Showing results 1 to 7 of 7

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