[Other] Some questions about unstructured grid.

Yanci · November 10, 2014, 04:41

Hello there,
I am new to OpenFoam. I have some questions about unstructured grid in OpenFoam.
1) Does the mesh must be imported from the third party software, if I want to use the unstructured grid in OpenFoam? Can I get it by using OpenFoam itself.

2) As far as I know, the data structure between structured and unstructured grid is very different. And the code which can handle some cases with structured grid successfully may not can handle the unstructured one. I wonder why the OpenFoam can handle both of them.

3) There is a case (structured grid) have been solved successfully by using a solver. Whether I only need to change the grid type, if I want to run this case with unstructured grid.

Thanks a lot to you all,
Yongxiao Wang

nimasam · November 28, 2014, 10:47

as far as i know:
1- you should import from third party.
2-maybe because its written for arbitrary unstructured grid

, so it can handle both
3- yes, you just need to change the grid

However when structure grid is available why do you want to use unstructured one?

November 10, 2014, 04:41	Some questions about unstructured grid.	#1
Yanci New Member Yongxiao Wang Join Date: Nov 2014 Posts: 16 Rep Power: 11	Hello there, I am new to OpenFoam. I have some questions about unstructured grid in OpenFoam. 1) Does the mesh must be imported from the third party software, if I want to use the unstructured grid in OpenFoam? Can I get it by using OpenFoam itself. 2) As far as I know, the data structure between structured and unstructured grid is very different. And the code which can handle some cases with structured grid successfully may not can handle the unstructured one. I wonder why the OpenFoam can handle both of them. 3) There is a case (structured grid) have been solved successfully by using a solver. Whether I only need to change the grid type, if I want to run this case with unstructured grid. Thanks a lot to you all, Yongxiao Wang

November 28, 2014, 10:47		#2
nimasam Senior Member Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,266 Blog Entries: 1 Rep Power: 24	as far as i know: 1- you should import from third party. 2-maybe because its written for arbitrary unstructured grid , so it can handle both 3- yes, you just need to change the grid However when structure grid is available why do you want to use unstructured one? __________________ My Personal Website (http://nimasamkhaniani.ir/) Telegram channel (https://t.me/cfd_foam)

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