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[ANSYS Meshing] Meshing Error For Triangular Channel

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Old   June 23, 2013, 08:56
Default Meshing Error For Triangular Channel
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AJ Hunter
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I have a fluid simulation problem where I have a triangular channel inside an aluminum cylinder (Basically like someone drilled a triangle all the way through a cylinder). When I go to create my inflation to make a boundary layer, I select the three faces of the triangle which runs for 15 cm (sides are 0.85 mm, 0.85 mm, 0.76 mm).

My inputs for the inflation are:
Scoping Method: Geometry Selection
Geometery: 1 Body
Supressed: No
Boundary Scoping Method: Geometry Selection
Boundary: 3 Faces
Inflation Option: Smooth Transition
Transtion Ratio: 0.25
Maximum Layers: 15
Growth Rate: 1.2
Inflation Algorithm: Pre


I get the following error: "Pre-inflation layer generation is stopped because of side face limitation, proximity collisions and quality."

Afterward, the mesh shows no boundary at the face. I have tried messing with the parameters, but havent had any luck.
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Old   June 24, 2013, 02:59
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Josef Runsten
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Could be that the triangle is to close to the cylindrical wall, so the inflation layers won't fit.

If you share your files it's easier to pinpoint the issue
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Old   June 24, 2013, 06:37
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I don't understand. The fluid is flowing through a triangular shaped channel though the cylinder. It is touching the cylinder. This would be the same as if it were a cylindrical pipe with a circle drilled through it instead of a triangle drilled through it.
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Old   June 24, 2013, 06:40
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Josef Runsten
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Can we get a picture of it at least?
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Old   June 25, 2013, 13:45
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Picture of the geometry (basically a pipe filled with water shaped like a triangle)

https://plus.google.com/u/0/photos/1...28021247361055



Mesh Output:

https://plus.google.com/u/0/photos/1...28021247361055

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Old   June 26, 2013, 02:18
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Try decreasing your body sizing so you can get a better transition from prism to tet
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