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Search took 0.00 seconds. Search: Posts Made By: ghorrocks
Forum: CFX April 30, 2013, 19:32
Replies: 14
Views: 2,046
Posted By ghorrocks
I do not understand your problem. What are you...

I do not understand your problem. What are you seeing and what do you expect to happen?
Forum: CFX April 26, 2013, 07:23
Replies: 14
Views: 2,046
Posted By ghorrocks
This is a floating point error (which then caused...

This is a floating point error (which then caused lots of other errors including crashing the parallel run) - this is an FAQ:...
Forum: CFX April 25, 2013, 18:49
Replies: 14
Views: 2,046
Posted By ghorrocks
Only use surface tension if it is important for...

Only use surface tension if it is important for the flow you are modelling. It is an expensive model and will slow you down a lot, so only use it if you have to.
Forum: CFX April 25, 2013, 07:04
Replies: 14
Views: 2,046
Posted By ghorrocks
No. Courant number only has a tenuous link to...

No. Courant number only has a tenuous link to convergence in CFX as it is an implicit solver.

The recommended approach for adaptive time stepping is homing in on 3-5 coeff loops per iteration.
Forum: CFX April 22, 2013, 18:25
Replies: 14
Views: 2,046
Posted By ghorrocks
That is because it needs small time steps! There...

That is because it needs small time steps! There are very few simulations where this does not find the correct time step.

The only exception to this is when you are happy to sacrifice accuracy to...
Forum: CFX April 22, 2013, 09:00
Replies: 14
Views: 2,046
Posted By ghorrocks
Why have you chose a 1ms time step? Unless you...

Why have you chose a 1ms time step? Unless you have actually done a sensitivity analysis on that time step size and determined it is what you need then it is bound to be wrong.

So let the solver...
Forum: CFX April 17, 2013, 18:48
Replies: 14
Views: 2,046
Posted By ghorrocks
Please post an image of what you are modelling...

Please post an image of what you are modelling and the CCL or output file.
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