Appropriate mesh

b.azz · April 26, 2012, 03:16

how we know whether mesh appropriate or not??????

LuckyTran · April 26, 2012, 09:02

Quote:

Originally Posted by b.azz

how we know whether mesh appropriate or not??????

Your mesh resolution should be fine enough to resolve all the features that you are interested in solving but coarse enough so that the computational cost can be kept low. The mesh should not introduce significant errors during the computation (mesh quality shall be good).

In other words, the mesh should do what you need it to do and it shouldn't do unwanted things.

It depends on what you are trying to do, but the rest are just details. If you have a particular application in mind then we can help you detail by detail.

Zigainer · April 26, 2012, 16:22

You can do a grid study to get to know if you grid is fine enough.
If you use a structured grid there is a good approach by Roach:

P.J. Roach. Perspective: A Method for Unifrom Repoting of Grid Refinement Studies. Journal of Fluids Engineering, 116:405–413, 1994.

And Celik shows a step by step instruction for this method:

I.B. Celik. Procedure for Estimation and Reporting of Discretization Error in CFD Applications. Journal of Fluids Engineering, 130(7), Juli 2008.

April 26, 2012, 03:16	Appropriate mesh	#1
b.azz New Member Azat Join Date: Apr 2012 Posts: 8 Rep Power: 14	how we know whether mesh appropriate or not??????

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[ICEM] surface mesh merging problem	everest	ANSYS Meshing & Geometry	44	April 14, 2016 06:41
[ICEM] Problem making structural mesh on a surface	froztbear	ANSYS Meshing & Geometry	1	November 10, 2011 08:52
[snappyHexMesh] snappyHexMesh won't work - zeros everywhere!	sc298	OpenFOAM Meshing & Mesh Conversion	2	March 27, 2011 21:11
Meshing aifoil in ICEM	student123a	ANSYS Meshing & Geometry	13	December 8, 2010 10:40
2d irregular grid	Remy	Main CFD Forum	1	December 22, 2008 04:49

April 26, 2012, 16:22		#3
Zigainer Senior Member Join Date: May 2011 Location: Germany Posts: 130 Rep Power: 14	You can do a grid study to get to know if you grid is fine enough. If you use a structured grid there is a good approach by Roach: P.J. Roach. Perspective: A Method for Unifrom Repoting of Grid Refinement Studies. Journal of Fluids Engineering, 116:405–413, 1994. And Celik shows a step by step instruction for this method: I.B. Celik. Procedure for Estimation and Reporting of Discretization Error in CFD Applications. Journal of Fluids Engineering, 130(7), Juli 2008.