Zero Fluid Volume

GeneG · July 15, 2011, 15:51

Hello, I am using EFDLAB 8. After bringing my model (STEP) and running Geometry check, I am getting good numbers (different from zero). After applying all the conditions and assigning all the parameters, system refuses to run my analysis and running geometry check again gives me a zero fluid volume.
I checking interferences, I found none.
Any leads? Thanks

Boris_M · August 1, 2011, 08:01

Hi Gene,
if you run ther check geometry before you ran the wizard to setup a project then you might have used it for external analysis if there was a gap somewhere and if you then define internal analysis in the wizard then you won't find a fluid volume if there is a gap so the model is not water tight. Try to switch from internal back to external and see if you find a fluid volume. This is a very good indicator to distinguish between invalid contacts and a not water tight model.
If you have invalid contact, neither internal nor external check will find a fluid volume. If there is a gap somewhere in you model you will find a fluid volume only in an external case as the model is not water tight for internal case it cannot find a enclosed cavity.

I hope this helps,
Boris

July 15, 2011, 15:51	Zero Fluid Volume	#1
GeneG New Member Gene G Join Date: Jul 2011 Posts: 2 Rep Power: 0	Hello, I am using EFDLAB 8. After bringing my model (STEP) and running Geometry check, I am getting good numbers (different from zero). After applying all the conditions and assigning all the parameters, system refuses to run my analysis and running geometry check again gives me a zero fluid volume. I checking interferences, I found none. Any leads? Thanks

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
There is no fluid volume in the project	Giron	FloEFD, FloWorks & FloTHERM	5	December 30, 2022 08:58
Water subcooled boiling	Attesz	CFX	7	January 5, 2013 03:32
channelFoam for a 3D pipe	AlmostSurelyRob	OpenFOAM	3	June 24, 2011 13:06
How to apply negtive pressure to outlet	bioman66	CFX	5	June 3, 2006 01:40
fluid hot volume in fluid cold volume	zahid	FLUENT	4	June 1, 2002 09:11

August 1, 2011, 08:01		#2
Boris_M Disabled Join Date: Jul 2009 Posts: 616 Rep Power: 23	Hi Gene, if you run ther check geometry before you ran the wizard to setup a project then you might have used it for external analysis if there was a gap somewhere and if you then define internal analysis in the wizard then you won't find a fluid volume if there is a gap so the model is not water tight. Try to switch from internal back to external and see if you find a fluid volume. This is a very good indicator to distinguish between invalid contacts and a not water tight model. If you have invalid contact, neither internal nor external check will find a fluid volume. If there is a gap somewhere in you model you will find a fluid volume only in an external case as the model is not water tight for internal case it cannot find a enclosed cavity. I hope this helps, Boris