Ways to successfully generate a mesh of a complex geometry with a lot of faces

yalweqayyalweqay Member
edited December 2020 in Preprocessing

I am trying to simulate a flow of the interior of this geometry. The geometry has a lot of faces. I have created an enclosure to get the fluid domain. However, i am having trouble in generating the mesh domain. I have tried enabling inflation, applying multizone method and still have no luck. Any thoughts on how to go about it? I have attached a picture of the geometry below. The error that i have got was "Multizone was not able to generate a valid mesh" and "mesh could not be generated using the current meshing options and settings"



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Best Answer

  • peteroznewmanpeteroznewman Member
    Accepted Answer

    @yalweqay Don't use Multizone for this geometry.

    Since you have a repeating structure, use the smallest unit of the structure. I can see 4 cells on each edge. That means you have 4x4x4 = 64 times too much geometry. Take 3 planes and cut 1/4 of the way in from one corner to get a single cell, that will be much easier to mesh with inflation.

    I have other software that can easily mirror a mesh. If I mirror the mesh 2 times in each direction, I will have recreated that geometry.

    If you can't figure out how to do that in ANSYS, you could just use 3 planes in each coordinate direction to slice the geometry into 64 pieces. Use Shared Topology to put them into a single part. Hopefully, each piece will mesh as nicely as a single cell does.

Answers

  • peteroznewmanpeteroznewman Member
    Accepted Answer

    @yalweqay Don't use Multizone for this geometry.

    Since you have a repeating structure, use the smallest unit of the structure. I can see 4 cells on each edge. That means you have 4x4x4 = 64 times too much geometry. Take 3 planes and cut 1/4 of the way in from one corner to get a single cell, that will be much easier to mesh with inflation.

    I have other software that can easily mirror a mesh. If I mirror the mesh 2 times in each direction, I will have recreated that geometry.

    If you can't figure out how to do that in ANSYS, you could just use 3 planes in each coordinate direction to slice the geometry into 64 pieces. Use Shared Topology to put them into a single part. Hopefully, each piece will mesh as nicely as a single cell does.

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