A 2D mesh with circular region, and applying a constant force on the circle

[salaudeen-ya]

Hello,

I am trying to analyze the problem in the image attached. Please how do I get a rectangular mesh with a circular region? And how do I apply a constant forcing term on the circular part? Thank you.

[GiudGiud]

Hello

For the constant forcing term, I think you will want to have a look at using a boundary condition if the variables only outside the circle in the rectangular regions.

To obtain a rectangular mesh with a circular hole, I think we have an example here:
https://github.com/idaholab/moose/blob/next/modules/navier_stokes/examples/flow-over-circle/mesh.i

Guillaume

[salaudeen-ya]

Thank you

[Rahim-Habibi]

Hi,
I can recommed to use Gmsh for meshing the domian.
you can create rectangular mesh with a circular region in.
If you want to apply boundary condition on the circle, you can define the circle as a physical property then you will have access to that in MOOSE input file.

[salaudeen-ya]

Thank you!

[salaudeen-ya]

Using a circular body force specified over the region of interest also works