Pre-Processing using ANSA

criros7 · February 27, 2018, 09:45

Hi everyone,

I'm an OpenFOAM's new user and I am trying to simulate the typical case of a laminar flow around a cylinder with heat transfer (3D).
I created the geometries (.igs) of the two different subdomains using CATIA V5 and then I meshed them using ANSA (i am also a new user too).
I have seen that with ANSA it is possible to set up an OpenFOAM case and after the geometries have been meshed, I tried to assign the BCs using the BC TOOLS (OpenFOAM DECKS) but as I export the case as "OpenFOAM Output", the "boundary" file generated in the PolyMesh directory does not include my BCs.

Anyone could help me, please?

Thank you.

akidess · February 28, 2018, 03:50

The boundary file is not supposed to include your physical BCs.

vangelis · February 28, 2018, 04:36

Dear Christian
You can setup your BCs in ANSA for OpenFOAM.

I suggest you have a look at the CFD tutorial Catalyst for OpenFOAM

You should launch ANSA in CFD mode from the launcher.

There is also a UDF that sets up automatically the boundary conditions on all PIDs based on some user input parameters.

Hope this helps

Best regards
Vangelis

criros7 · March 7, 2018, 08:41

Dear Vangelis,

Thank you very much for your hint!

Just a question...Do you know what type of BC I have to use in order to get the exchange of informations between the interface air-solid?

I was thinking to implement in my script constant/cylinder/polyMesh/boundary a BC called mappedWall but I don't know what sampleRegion and samplePatch stand for.

CYLINDER_GAMMA
{
type mappedWall;
sampleMode nearestPatchFace;
sampleRegion ;
samplePatch ;
startFace 3780;
nFaces 288;
}

best regards,

Christian

February 27, 2018, 09:45	Pre-Processing using ANSA	#1
criros7 New Member christian rossi Join Date: Feb 2018 Posts: 3 Rep Power: 8	Hi everyone, I'm an OpenFOAM's new user and I am trying to simulate the typical case of a laminar flow around a cylinder with heat transfer (3D). I created the geometries (.igs) of the two different subdomains using CATIA V5 and then I meshed them using ANSA (i am also a new user too). I have seen that with ANSA it is possible to set up an OpenFOAM case and after the geometries have been meshed, I tried to assign the BCs using the BC TOOLS (OpenFOAM DECKS) but as I export the case as "OpenFOAM Output", the "boundary" file generated in the PolyMesh directory does not include my BCs. Anyone could help me, please? Thank you.

February 28, 2018, 03:50		#2
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 30	The boundary file is not supposed to include your physical BCs. __________________ On twitter @akidTwit Spend as much time formulating your questions as you expect people to spend on their answer.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Proplems preprocessing (connecting mesh, feature line detection)	19Karloss79	STAR-CCM+	4	April 21, 2017 11:39
[ICEM] Pre inlfation layer settings	Jeroenm	ANSYS Meshing & Geometry	0	September 29, 2016 04:22
a pre processing problem!	sinatahmooresi	OpenFOAM Pre-Processing	1	March 7, 2016 04:41
DEM - Pre Processing - Joining two separate mesh regions after some iterations	yesaswi92	STAR-CCM+	0	August 27, 2014 13:03
PRE and POST processing package	Astrid Barros	Main CFD Forum	6	November 16, 2000 11:31

February 28, 2018, 04:36		#3
vangelis Senior Member Vangelis Skaperdas Join Date: Mar 2009 Location: Thessaloniki, Greece Posts: 287 Rep Power: 21	Dear Christian You can setup your BCs in ANSA for OpenFOAM. I suggest you have a look at the CFD tutorial Catalyst for OpenFOAM You should launch ANSA in CFD mode from the launcher. There is also a UDF that sets up automatically the boundary conditions on all PIDs based on some user input parameters. Hope this helps Best regards Vangelis

March 7, 2018, 08:41		#4
criros7 New Member christian rossi Join Date: Feb 2018 Posts: 3 Rep Power: 8	Dear Vangelis, Thank you very much for your hint! Just a question...Do you know what type of BC I have to use in order to get the exchange of informations between the interface air-solid? I was thinking to implement in my script constant/cylinder/polyMesh/boundary a BC called mappedWall but I don't know what sampleRegion and samplePatch stand for. CYLINDER_GAMMA { type mappedWall; sampleMode nearestPatchFace; sampleRegion ; samplePatch ; startFace 3780; nFaces 288; } best regards, Christian