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-   -   chtmultiregionFoam (http://www.cfd-online.com/Forums/openfoam/85006-chtmultiregionfoam.html)

alvora February 15, 2011 04:59

chtmultiregionFoam
 
Hello Friends,

I am looking for the any material for chtMultiRegionFoam. I want to understand the .C and .H files of chtmultiregionfoam. can anyone suggest me any guide book or any other related material for chtmultiregionfoam, please?

Kind Regards
Alpesh

masuarez February 16, 2011 00:04

Alvora,

There are two really good threads here involving chtmultiregionFoam in this website.

http://www.cfd-online.com/Forums/ope...egionfoam.html

and
http://www.cfd-online.com/Forums/ope...implefoam.html

by maddalena

Also,

http://www.cfd-online.com/Forums/ope...rial-15-a.html

by psosnows.


the one by psosnows is really long.. but has lots of information.

What exactly are you looking for?

I'm also trying to figure out chtmultiregionFoam as I am using it for school research. Let me know if you have any information.

Miguel

alvora February 16, 2011 03:19

Hello Miguel,

Thank you very much for reply.

I am doing simulation for partical partical interaction under applied external electric field. I have to investigate the electric current distribution on particle surface as well as surrounding fluid area. If you have any suggestion, please inform me. Both spherical partical are not in contact. electric potential applied acroos two sphere. I want to find that how much current will transfer from the one particle to fluid and from fluid to onther particle.

In chtmultiregionfoam, the heater and fluid region geometry define in .setSet file. In that, the "cellToBox" commad used and it is for box type geometry. but what about for sphearical geometry? how we can define the sphere inside the cube? I want to define two different sphere as the solid body and surrounding fluid as fluid region.

Again Thank you very much for your interest..

Kind Regards
Alpesh

maddalena February 16, 2011 03:52

Quote:

Originally Posted by masuarez (Post 295433)
There are two really good threads here involving chtmultiregionFoam in this website.

http://www.cfd-online.com/Forums/ope...egionfoam.html

and
http://www.cfd-online.com/Forums/ope...implefoam.html

by maddalena

Well... thank you! :) I wanted to point them out, but it seemed not fair...:rolleyes:

mad

alvora February 16, 2011 04:17

Hello maddalena,

Thank you very much..

But y it is not fair?
means chtMultiregionFoam is not correct for my problem or what?

kind regards
Alpesh

maddalena February 16, 2011 06:37

Quote:

Originally Posted by alvora (Post 295454)
But y it is not fair?
means chtMultiregionFoam is not correct for my problem or what?

No, no! I did not want to sponsor a thread that I started! But Miguel did that ;)

mad

masuarez February 16, 2011 10:40

Alpesh,

I think Maddalena was being modest and did not want to reference her own threads!

As far as your multiRegion Mesh, I followed the "Cht tutorial in 15" at around page 3 where psosnows does a really good job explaining how to get around the .setSet file (which I don't know how to use) when creating solid and fluid regions.

****Keep in mind that i just started using OpenFOAM and i'm not an expert in any way, shape, or form. I'm still trying to figure it out. I had to read "Cht tutorial in 15" several times to understand a multiregion mesh.

Best of luck to you.

P.S. I have seen several threads dealing with a similar topic as yours... i'll try to see if i can find them. Initially, i found them by chance, but i'm sure they are around.

Miguel

maddalena February 16, 2011 12:42

Quote:

Originally Posted by masuarez (Post 295532)
I think Maddalena was being modest and did not want to reference her own threads!

:D

Quote:

Originally Posted by alvora (Post 295446)
In chtmultiregionfoam, the heater and fluid region geometry define in .setSet file. In that, the "cellToBox" commad used and it is for box type geometry. but what about for sphearical geometry? how we can define the sphere inside the cube? I want to define two different sphere as the solid body and surrounding fluid as fluid region.

if you create your mesh with a specific software (Pointwise, Gambit or what else), you can create the model as for fluent and than use the following:
Code:

fluentMeshToFoam myMesh.cas -writeSets
setsToZones -noFlipMap
splitMeshRegions -cellZones -overwrite

This will create the two regions you need.

mad

alvora February 18, 2011 05:18

Hello,

thank you very much maddalena and miguel for your reply. I am trying to figure out.. I will inform if works good..

Thanks alt...

alvora February 23, 2011 04:06

chtMultiregionFoam, How to run?
 
Hello Friends

I am trying to run chtMultiRegionFoam by typing the ./Allrun in terminal window in Openfoam 1.7.1. But, when I looked in VTK folder, there is five different regionname folder is there and every folders contain only one region_1.VTK file.
My question is: When I run the tutuorial MultiRegionHeater, I have to consider some other things or I have to change anything in that tutorial? because I run that tutorial for 200 and also try for 400 sec. but, execution time is same for both case and VTK folder contain same file. So, i think program is not running upto end.
so, is there any speacial treatment for postprocessing or require some change in boundary condition or what?

can anyone give me suggestion, please?

Kind Regards
Alpesh


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