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Prism layer problem

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Old   February 19, 2018, 06:39
Default Prism layer problem
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Hello,

Trying to mesh a boat but the prism layers are retracting on the head of the boat where they have no reason to. Increasing the layer reduction percentage somewhat solves it but this is the best i got so far with 85 percent which is the limit. What might be the problem here?

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Old   February 19, 2018, 08:26
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Use surface remesher before trimmer
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Old   February 19, 2018, 12:16
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Quote:
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Use surface remesher before trimmer
it's already activated in mesher models. do you suggest doing that seperately?
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Old   February 20, 2018, 03:42
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No, of course, there is no difference. Just some people make a mesh without remesher.
Try then remesher+Advancing layer mesher. But the mesh will be built long.
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Old   February 20, 2018, 05:21
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Quote:
Originally Posted by slesar85 View Post
No, of course, there is no difference. Just some people make a mesh without remesher.
Try then remesher+Advancing layer mesher. But the mesh will be built long.
Thats one of the first things i've tried. Although it did resolve the issue, the cell count went up by a lot since i need to refine the free-surface and polyhedral cannot be refined anisotropically. Guess i have to do something else. Thanks for the answers.

Cheers,
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Old   February 20, 2018, 22:05
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Building a mesh over what looks like a sharp curve is a great challenge. Is that a symmetry plane? You may have an easier time generating the layers if you just put prisms over the symmetry plane as well. Projecting prisms to a symmetry plane at such an obtuse angle will nearly always give you these skewed cells.
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Old   February 21, 2018, 04:45
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Building a mesh over what looks like a sharp curve is a great challenge. Is that a symmetry plane? You may have an easier time generating the layers if you just put prisms over the symmetry plane as well. Projecting prisms to a symmetry plane at such an obtuse angle will nearly always give you these skewed cells.
yes, it's a symmetry plane. Thanks for the advice, i will try it out.
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Old   March 3, 2018, 03:36
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You must define symmetry region as symmetry plane before generate mesh.
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Old   June 7, 2020, 16:15
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Quote:
Originally Posted by me3840 View Post
Building a mesh over what looks like a sharp curve is a great challenge. Is that a symmetry plane? You may have an easier time generating the layers if you just put prisms over the symmetry plane as well. Projecting prisms to a symmetry plane at such an obtuse angle will nearly always give you these skewed cells.
I agree to what you said above. But the prism layers are automatically generated on wall type boundaries. Why they move to symmetry plane?
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