[blockMesh] two sided mesh refinement(in both direction)

immortality · May 23, 2013, 06:43

Hi
I wondering if is there a way to have a mesh grow/decrease ratio in both sides of a block without the need to break it to two blocks.
in the customary way it has ratio only in one direction

Code:

hex (1 2 5 4 10 11 14 13) (100 10 1) simpleGrading (.5 8 1)

is there a feature to refine mesh with a ratio in both directions like FLUENT and maybe other softwares?

colinB · May 23, 2013, 10:40

the keyword is doubleGrading see below:

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

be prepared it is a do-it-yourself feature of OF

regards

Yosmcer · May 24, 2013, 03:54

The other grading method in the tutorial is edgeGrading but it only allow to decompose according to the edges instead of only direction. This do not allow to have different direction of grading on the same edge.

So the solution seams to be to use this king of script. However, I's possible that you need to update it to be compatible with your openFOAM version.

Instructions seams to be there: http://openfoamwiki.net/index.php/Contrib_blockMeshDG

May 23, 2013, 06:43	two sided mesh refinement(in both direction)	#1
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 26	Hi I wondering if is there a way to have a mesh grow/decrease ratio in both sides of a block without the need to break it to two blocks. in the customary way it has ratio only in one direction Code: hex (1 2 5 4 10 11 14 13) (100 10 1) simpleGrading (.5 8 1) is there a feature to refine mesh with a ratio in both directions like FLUENT and maybe other softwares? __________________ Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked.

May 23, 2013, 10:40		#2
colinB Senior Member Join Date: Aug 2010 Location: Groningen, The Netherlands Posts: 216 Rep Power: 18	the keyword is doubleGrading see below: http://www.cfd-online.com/Forums/ope...e-grading.html be prepared it is a do-it-yourself feature of OF regards immortality likes this. Last edited by colinB; May 24, 2013 at 02:10.

May 24, 2013, 03:54		#3
Yosmcer Member Yosmcer Mocktai Join Date: Apr 2013 Location: Behind a computer Posts: 50 Rep Power: 17	The other grading method in the tutorial is edgeGrading but it only allow to decompose according to the edges instead of only direction. This do not allow to have different direction of grading on the same edge. So the solution seams to be to use this king of script. However, I's possible that you need to update it to be compatible with your openFOAM version. Instructions seams to be there: http://openfoamwiki.net/index.php/Contrib_blockMeshDG immortality likes this.

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