Non-Uniform Flux

senCFX · June 17, 2010, 06:32

Dear CFX user,

Do anyone know, how to give non-uniform boundary conditions (say heat flux) in a plane surface of a 3D objects? in ANSYS CFX

My heat flux value is not uniform, so i want to give this value like this. Maximum at the center and minimum at the edges (NORMAL DISTRIBUTION).

Can ANYONE give idea for my problem.

Regards,
SENcfx

ghorrocks · June 17, 2010, 08:15

This is easily done with a CEL expression. This can be an analytical function or a 1D/3D interpolation function.

senCFX · August 18, 2010, 18:04

Very recently i got this error dispalyed; Do you have any idea regarding this.

ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| SYMASS_CS_ELIM : The solver ran out of temporary space while buil- |
| ding a linked list for a domain. Try setting the expert paramete- |
| r "topology estimate factor" to a value greater than 1.0. Values |
| higher than 1.2 should not be necessary.

IT IS SOLID FLUID PROBLEM. please let me what is error?

Regards,
SENCFX.

ghorrocks · August 18, 2010, 18:49

The problem is probably associated with a complicated GGI linking the solid and fluid domains. Check your interface mesh is well resolved and of good quality.

senCFX · August 19, 2010, 06:22

Quote:

Originally Posted by ghorrocks

The problem is probably associated with a complicated GGI linking the solid and fluid domains. Check your interface mesh is well resolved and of good quality.

Thanks Ghorrocks,
I will change the interface mesh

Regards,
SENCFX

June 17, 2010, 06:32	Non-Uniform Flux	#1
senCFX New Member sendhil Join Date: May 2010 Posts: 11 Rep Power: 15	Dear CFX user, Do anyone know, how to give non-uniform boundary conditions (say heat flux) in a plane surface of a 3D objects? in ANSYS CFX My heat flux value is not uniform, so i want to give this value like this. Maximum at the center and minimum at the edges (NORMAL DISTRIBUTION). Can ANYONE give idea for my problem. Regards, SENcfx

August 18, 2010, 18:04	Hai Ghorrocks,	#3
senCFX New Member sendhil Join Date: May 2010 Posts: 11 Rep Power: 15	Very recently i got this error dispalyed; Do you have any idea regarding this. ERROR #001100279 has occurred in subroutine ErrAction. \| \| Message: \| \| SYMASS_CS_ELIM : The solver ran out of temporary space while buil- \| \| ding a linked list for a domain. Try setting the expert paramete- \| \| r "topology estimate factor" to a value greater than 1.0. Values \| \| higher than 1.2 should not be necessary. IT IS SOLID FLUID PROBLEM. please let me what is error? Regards, SENCFX.

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June 17, 2010, 08:15		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	This is easily done with a CEL expression. This can be an analytical function or a 1D/3D interpolation function.

August 18, 2010, 18:49		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	The problem is probably associated with a complicated GGI linking the solid and fluid domains. Check your interface mesh is well resolved and of good quality.