CFX problem with interface detection

Fauster · June 1, 2016, 12:09

Dear all CFX experts,

How CFX detects interface (solid/fluid) ? Does he use the material type in the mesh node ?

In the pre-processing I am getting some weird interfaces. For exemple, in a domain node I should have only fluid/solid and solid/solid interfaces type. But I have also a default boundary node. This is not logical because my domain is surrounded by fluid or solid..

I am wondering if the problem doen't not come from meshing...Maybe if the meshs are not connected CFX can't detect appropriate interfaces....

Any help would be greatly appreciated

ghorrocks · June 1, 2016, 20:06

Have a look at the default boundary and see what surfaces it has put in it. You might have a meshing problem you are not aware of.

Fauster · June 2, 2016, 04:45

Thanks for your reply.

The problem came from the CAD file. The geometry wasn't "shared". This created some weird problem of contact...

June 1, 2016, 12:09	CFX problem with interface detection	#1
Fauster Member Paul Palladium Join Date: Jan 2016 Posts: 93 Rep Power: 10	Dear all CFX experts, How CFX detects interface (solid/fluid) ? Does he use the material type in the mesh node ? In the pre-processing I am getting some weird interfaces. For exemple, in a domain node I should have only fluid/solid and solid/solid interfaces type. But I have also a default boundary node. This is not logical because my domain is surrounded by fluid or solid.. I am wondering if the problem doen't not come from meshing...Maybe if the meshs are not connected CFX can't detect appropriate interfaces.... Any help would be greatly appreciated

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June 1, 2016, 20:06		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Have a look at the default boundary and see what surfaces it has put in it. You might have a meshing problem you are not aware of.

June 2, 2016, 04:45		#3
Fauster Member Paul Palladium Join Date: Jan 2016 Posts: 93 Rep Power: 10	Thanks for your reply. The problem came from the CAD file. The geometry wasn't "shared". This created some weird problem of contact...