Weird Behaviour

Michael-STM · March 13, 2014, 17:47

I'm trying to model the flow across a car. I have meshed the geometry and runned some iteration on Fluent.
But the velocity is zero everywhere!, even the boundary condition are not respected (e.g. the velocity inlet dispaly zero velocity everywhere despite the 55 m/s condition).
I have tried to remesh the geometry...no luck.
Any help?

Bionico · March 14, 2014, 02:52

Hello Michele,
can you post some details about your mesh? Is this problem showing in CFD-Post or in Fluent?

Regards

Michael-STM · March 14, 2014, 03:11

The problem is showing up in Fluent and also in the Post.
The mesh has been created with Ansys Meshing with the defaults setting and some volumetric controls.

Bionico · March 14, 2014, 06:11

I asked it because sometimes, because of some bug, in CFD-Post I see contours of temperature or velocity with null values everywhere!
Is your mesh big or can you post it here?

Regards

Michael-STM · March 14, 2014, 14:15

I have recreated the mesh once again and now it appears to work.
I do not know where the problem was, now after some iterations is evident that the problem is definitely dissapeared

March 13, 2014, 17:47	Weird Behaviour	#1
Michael-STM Member Michele Join Date: Dec 2013 Posts: 32 Rep Power: 13	I'm trying to model the flow across a car. I have meshed the geometry and runned some iteration on Fluent. But the velocity is zero everywhere!, even the boundary condition are not respected (e.g. the velocity inlet dispaly zero velocity everywhere despite the 55 m/s condition). I have tried to remesh the geometry...no luck. Any help?

March 14, 2014, 02:52		#2
Bionico Senior Member Flavio Join Date: Sep 2011 Location: Brescia, Italy Posts: 181 Rep Power: 16	Hello Michele, can you post some details about your mesh? Is this problem showing in CFD-Post or in Fluent? Regards __________________ Bionico

March 14, 2014, 06:11		#4
Bionico Senior Member Flavio Join Date: Sep 2011 Location: Brescia, Italy Posts: 181 Rep Power: 16	I asked it because sometimes, because of some bug, in CFD-Post I see contours of temperature or velocity with null values everywhere! Is your mesh big or can you post it here? Regards __________________ Bionico

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[snappyHexMesh] weird behaviour snappyhexmesh	FerdiFuchs	OpenFOAM Meshing & Mesh Conversion	2	March 7, 2014 09:38
Unexpected behaviour of timeVaryingMappedFixedValue	Kopy	OpenFOAM Running, Solving & CFD	3	March 15, 2013 12:27
Particle behaviour in cfd	RedAdmiral	Main CFD Forum	0	November 18, 2012 10:51
twoPhaseEulerFoam - weird behaviour	grjmell	OpenFOAM Running, Solving & CFD	5	May 22, 2012 05:07
Unstable behaviour after long period of stablility	plunge11	FLUENT	1	April 6, 2011 10:15

March 14, 2014, 03:11		#3
Michael-STM Member Michele Join Date: Dec 2013 Posts: 32 Rep Power: 13	The problem is showing up in Fluent and also in the Post. The mesh has been created with Ansys Meshing with the defaults setting and some volumetric controls.