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[Other] how to merge two meshes and fields

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Old   February 26, 2015, 06:18
Default how to merge two meshes and fields
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Davide Lasagna
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Hi all,

This is my problem: I wanted to solve for the steady laminar solution past a circular cylinder at Re=100, thus higher than the bifurcation point where instability occurs.

I started by creating only the upper "half" mesh, with a symmetry plane passing through the cylinder with a free-slip boundary condition. This procedure kills the instability and I can obtain the steady solution on this reduced domain with icoFoam, solving the transient problem.

However, I now want to have the steady solution on the complete domain, on a full grid, and start a new simulation from there to observe the growth of the instability.

I started by using rotateMesh and transformPoints to generate the solution also on the lower half. I then used mergeMesh to merge the upper and lower parts, but it appears that the fields are not merged.

Is there any other possible solution to my problem?


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Old   June 22, 2017, 07:33
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I have exactly the same problem and am also trying to do that, nothing has worked yet, i had to recompute the steady solution on the whole domain which is quite stupid.

Has anyone any idea ?


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mesh merge, symmetry plane

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