[blockMesh] How to define symmetric graded mesh without using multiple blocks

sahmed · June 24, 2016, 13:30

Dear Foamers
I am a confused about a very basic question, which you can give me some suggestion from your experience. I am using blockMesh and if I want to have a symmetric kind of graded mesh, like finer at the entry and exit of the block (can be symmetric) and coarser in the middle, how can I do this with a single block without defining multiple blocks?
I hope I could explain my question correctly to you. It might be very easy, but not clicking me right now.
PLEASE help me if anyone did this before.

sahmed · June 24, 2016, 14:57

Does the blockMeshDoubleGrading utility serve this purpose and is it compatible with OF version 2.3.1?? It can just double the mesh size in the middle, cant make 3 times or 4 times, right?
Also can anyone tell me the steps to add this in openFOAM?

sahmed · June 27, 2016, 10:54

Anyone has any idea to help me?

Danubi · August 18, 2016, 03:33

Hi Sahmed,

I'm facing similar case these days. Have you checked this?:

http://cfd.direct/openfoam/user-guide/blockmesh/

Chapter 5.3.1.4 Multi-grading of a block.

I think you can save lots of time with it.

Regards

June 24, 2016, 13:30	How to define symmetric graded mesh without using multiple blocks	#1
sahmed Member Sheikh Ahmed Join Date: Dec 2015 Location: South Carolina, USA Posts: 88 Rep Power: 10	Dear Foamers I am a confused about a very basic question, which you can give me some suggestion from your experience. I am using blockMesh and if I want to have a symmetric kind of graded mesh, like finer at the entry and exit of the block (can be symmetric) and coarser in the middle, how can I do this with a single block without defining multiple blocks? I hope I could explain my question correctly to you. It might be very easy, but not clicking me right now. PLEASE help me if anyone did this before.

June 24, 2016, 14:57	blockMeshDoubleGrading	#2
sahmed Member Sheikh Ahmed Join Date: Dec 2015 Location: South Carolina, USA Posts: 88 Rep Power: 10	Does the blockMeshDoubleGrading utility serve this purpose and is it compatible with OF version 2.3.1?? It can just double the mesh size in the middle, cant make 3 times or 4 times, right? Also can anyone tell me the steps to add this in openFOAM?

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June 27, 2016, 10:54		#3
sahmed Member Sheikh Ahmed Join Date: Dec 2015 Location: South Carolina, USA Posts: 88 Rep Power: 10	Anyone has any idea to help me?

August 18, 2016, 03:33		#4
Danubi New Member Dan Join Date: Nov 2013 Posts: 23 Rep Power: 12	Hi Sahmed, I'm facing similar case these days. Have you checked this?: http://cfd.direct/openfoam/user-guide/blockmesh/ Chapter 5.3.1.4 Multi-grading of a block. I think you can save lots of time with it. Regards