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Boundary layer on Unstructured mesh

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Old   August 7, 2013, 00:17
Default Boundary layer on Unstructured mesh
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Hello All, I have a small question. Could we create a boundary layer on 3d unstrured mesh in gambit. I need to capture flow seperation and since, I cannot have a really fine mesh on my object, I wanted to use BL. This doesn't work. So any suggestions??
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Old   August 7, 2013, 05:57
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sure you can: http://aerojet.engr.ucdavis.edu/gamb...tm#mesh_blayer
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Old   August 7, 2013, 09:53
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The boundary layer is placed inside the body. Like on the surface, but can't it grow above the 3d structure? For ex in the sail boat meshing in gambit tutorial 14. I hope u got my question.
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Old   August 7, 2013, 10:34
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in 3d the BL has to be attaches to the wall surface
Else post pictures
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Old   August 7, 2013, 11:29
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In the picture I uploaded to see the flow desperation I have to refine my mesh and since I cannot mesh so fine due to system limitations I have to have boundary layer. But when Put a boundary layer, I couldn't have it properly.

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Old   August 7, 2013, 11:38
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display how look your BL like, even if you cannot create it.
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Old   August 7, 2013, 11:59
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I am currently out of my workspace. So cannot publish pictures right now. Will do shortly. In the image I updated its the front part of my body. If u observe there is higher space between each cell. So to decrease cell distance I want to lay a BL. How to attach a BL to this surface?? Do we go SELECT BL give the first length. If I do so, the BL grows on the surface of face . But it doesn't grown on top of face( grows exactly the way it is shown in link u posted). My basic is how to reduce the distance between cells without effecting
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Old   August 7, 2013, 20:13
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I want boundary layer in the edges in the 1 st block but I'm getting as in the picture..
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Old   August 7, 2013, 20:23
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Below image, as u see, in the 5 boxes box like faces available, I want to have BL on each face with spacing .00001 intial length. So, I couldn't ge that though. The while patch is the BL I'm getting. So, any suggesting as to how that works??
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Old   August 12, 2013, 00:41
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in your picture I don't see any BL attached.
If you do it right, you select the surfaces of your body as attachment, and give first cell's height and also how many layers you want.
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