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Forum: CFX July 23, 2009, 00:23
Replies: 37
Views: 14,019
Posted By ghorrocks
Hi, No, you have misunderstood. The...

Hi,

No, you have misunderstood.

The pressure boundary as the liquid free surface approach should only be used single phase.

If you are running a multiphase simulation then you should raise...
Forum: CFX July 23, 2009, 00:01
Replies: 37
Views: 14,019
Posted By ghorrocks
Set the boundary as an opening, defined using...

Set the boundary as an opening, defined using pressure.
Forum: CFX July 22, 2009, 23:53
Replies: 37
Views: 14,019
Posted By ghorrocks
hi, A symmetry boundary is not a good...

hi,

A symmetry boundary is not a good choice. It can allow the pressure to deviate from atmospheric. This may or may not be important, that depends on the model. But anyway that's why I recommend...
Forum: CFX July 22, 2009, 23:03
Replies: 37
Views: 14,019
Posted By ghorrocks
hi, Does the free surface do much? If it...

hi,

Does the free surface do much? If it stays pretty much flat then I would not do a free surface simulation at all but a single phase model with the top surface a pressure boundary, of possibly...
Forum: CFX July 21, 2009, 18:46
Replies: 37
Views: 14,019
Posted By ghorrocks
Ok everybody, let's get back to the topic. I...

Ok everybody, let's get back to the topic. I think the point has been made so let's move on.

If you want a simple model of the free surface then won't a opening set at atmospheric pressure do the...
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