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#1 |
Member
luca
Join Date: Feb 2011
Posts: 34
Rep Power: 15 ![]() |
hi everybody
I need to solve the flow over a sloping bed in a 3D mesh. I therefore need the cells at the boundary wall to be as rectangular as possible. when i generate the mesh i obtain only vertical lines in my depth direction and this results in a highly skewed mesh. how can i tell the program that i want all the angles of the cell to be as perpendicular as possible? Is there any command in gmsh that can do this? thanks |
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#2 |
New Member
Gregor Seljak
Join Date: Oct 2010
Posts: 21
Rep Power: 15 ![]() |
Can you attach your .geo file, so we can see the exact geometry. Then it will be easier to give some advice.
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#3 |
Member
luca
Join Date: Feb 2011
Posts: 34
Rep Power: 15 ![]() |
thanks
i attached the file. as you can see I have a highly skewed mesh. and i want to have the cells at the bottom boundary layer to be rectangular and not rhomboid. is there any algorithm i can use?? |
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#4 |
New Member
Gregor Seljak
Join Date: Oct 2010
Posts: 21
Rep Power: 15 ![]() |
I don't know if I understand you correctly, but if you use Recombine Surface, you get mesh like this
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#5 |
Member
luca
Join Date: Feb 2011
Posts: 34
Rep Power: 15 ![]() |
Thanks.
I explained myself badly... sorry! Lets try to explain it with a picture. You can find that attached. The vertical direction in the figure represents the z axis. As you can see my actual mesh(left) has the boundary cells rhomboid shaped at the bottom (i am simulating a boundary layer flow so i need cells to be rectangular) I want to have them as rectangular as possible like in the sketch i made (right). I now did Recombine Mesh and my mesh is now uploaded (attached). |
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Tags |
gmsh, mesh |
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