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Help needed with Cornell's Gambit airfoil tutorial

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Old   April 3, 2009, 02:59
Default Help needed with Cornell's Gambit airfoil tutorial
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Ok im new to Gambit or any other CFD software. But im required to use this fro my project. Hope to get some help here.

I tried a couple of times creating the mesh using the airfoil SG6042 .with the tutorial from Cornell University. But i keep running into a problem with the point G which is created at the tail of the airfoil.

The problem is that i cannot subtract the airfoil from the semicircle portion. It gives the error : "ACIS error 8029:inconsistent edge face relationships". If i were to shift it a little i could subtract it but meshing takes a long time and i can only do it using PAVE method not MAP.

The tutorial is found here
http://courses.cit.cornell.edu/fluent/airfoil/step1.htm

Is there a way around the vertex point G. I tried using the same airfoil given it has such problems too. Somtimes vetices gets deleted. Thank you.

Last edited by Arti; April 3, 2009 at 03:17.
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Old   April 3, 2009, 14:09
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I assume there is a problem with the fact that G belongs to the airfoil and also to the semi circle
Try this:
Substract the airfoil from the whole big domain (ABCDEFA).
Then once it is substrated (ie the airfoil is a hole --> shaded mode), you have to split the face along the edge (AE), G is aligned on this edge.
And then the same wit (GC).
It should be ok
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Old   April 4, 2009, 12:04
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oh ok thanks alot will try it out.
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Old   May 30, 2009, 03:40
Default 2Dairfoil balde in gambit
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Hi all,
I am having trouble meshing 2D boundary layers in Gambit. The geometry I am working with is the wind airfoil. I have flow inlet and outlet, and inlet/outlet is planar and roughly rectangular. The entire geometry is a sort of rectangular shaped outer airfoil. I can create but when I use the "View 2D Boundary Layer" tool in Gambit, my boundary layers will not even appear in the selection list and cannot be added by shift-left-clicking on them. Does anyone know why they cannot be added to the list?
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