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

Forum: CFX November 1, 2010, 16:41

Replies: 13 Turbulent SST model Views: 5,257 Posted By ghorrocks I have not come across a problem with free slip... I have not come across a problem with free slip walls like this before. But I do not use free slip walls very much as they are not physically possible, and from your description of what you are doing...

Forum: CFX October 31, 2010, 17:14

Replies: 13 Turbulent SST model Views: 5,257 Posted By ghorrocks If it needs such a tiny time step to start off... If it needs such a tiny time step to start off then you will need to ramp it up to a sensible value slowly as the simulation progresses. But if you need such a small value to start it off...

Forum: CFX October 31, 2010, 04:37

Replies: 13 Turbulent SST model Views: 5,257 Posted By ghorrocks Is the no slip region planar? You might be able... Is the no slip region planar? You might be able to make it a symmetry plane. Also try making the timestep smaller still. How much smaller have you already gone, and what is the flow timescale?...

Forum: CFX October 30, 2010, 05:46

Replies: 13 Turbulent SST model Views: 5,257 Posted By ghorrocks OK, so it is diverging in the first iteration on... OK, so it is diverging in the first iteration on the first set of equations. Then you need a better initial guess or smaller timesteps to start off with.

Forum: CFX October 29, 2010, 06:50

Replies: 13 Turbulent SST model Views: 5,257 Posted By ghorrocks What is the error message? Please post the final... What is the error message? Please post the final sections of the output file. But the answer almost always is to use a better initial guess to start you off. Use a laminar model as an initial...

Forum: CFX October 28, 2010, 18:11

Replies: 13 Turbulent SST model Views: 5,257 Posted By ghorrocks Steady state or transient? Steady state or transient?

Showing results 1 to 6 of 6

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