O-grid or Polar-grid for airfoil mesh

fippo_dk · March 30, 2011, 04:43

Hi,

I want to simulate the flow around an airfoil, and I want to mesh the domain in an o-grid (or polar grid), in order to conveniently simulate the flow for different angles of attack.

My problem is mostly at the trailing edge, where I get the cells very skewed.

I want to mesh the trailing edge like in the screenshot.

Does anyone have ideas/suggestions on how to implement such mesh with blockMesh/gmsh or any other open source mesh generator?

Cheers

image002.jpg

image006.jpg

image008.jpg

linnemann · March 31, 2011, 07:57

Hello

Certainly doable using Salome.

With a bit of clever thinking you can make a python script that takes XFoil profiles and makes a macro for Salome.

The end result will look something like the following.

fippo_dk · March 31, 2011, 08:30

Could you post a screenshot of the far domain? is it a circular or square domain?

What about the trailing edge? is it blunt or sharp?

Mvh

Felipe

linnemann · March 31, 2011, 08:32

Hi its a circular domain and the trailing edge is blunt.

March 30, 2011, 04:43	O-grid or Polar-grid for airfoil mesh	#1
fippo_dk New Member Felipe Join Date: Apr 2010 Posts: 14 Rep Power: 17	Hi, I want to simulate the flow around an airfoil, and I want to mesh the domain in an o-grid (or polar grid), in order to conveniently simulate the flow for different angles of attack. My problem is mostly at the trailing edge, where I get the cells very skewed. I want to mesh the trailing edge like in the screenshot. Does anyone have ideas/suggestions on how to implement such mesh with blockMesh/gmsh or any other open source mesh generator? Cheers image002.jpg image006.jpg image008.jpg Last edited by fippo_dk; March 30, 2011 at 05:08.

March 31, 2011, 08:32		#4
linnemann Senior Member Niels Nielsen Join Date: Mar 2009 Location: NJ - Denmark Posts: 556 Rep Power: 28	Hi its a circular domain and the trailing edge is blunt. __________________ Linnemann PS. I do not do personal support, so please post in the forums.

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March 31, 2011, 08:30		#3
fippo_dk New Member Felipe Join Date: Apr 2010 Posts: 14 Rep Power: 17	Could you post a screenshot of the far domain? is it a circular or square domain? What about the trailing edge? is it blunt or sharp? Mvh Felipe