Il giorno 20 feb 2023, alle ore 07:08, Deepika Kushwah <deepika...@iitgoa.ac.in> ha scritto:
Hello Everyone,I have created a merged geometry by using subdivided_hyper_cube and two hyper_ball functions. See below
<image.png>I want to apply a spherical manifold for both hyper_balls. Can you please suggest to me how I can do this?Thanks and Regard,Deepika
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By default, the manifold_id is set to 0 on the boundary faces, 1 on the boundary cells, and numbers::flat_manifold_id on the central cell and on internal faces. A SphericalManifold is attached by default to the boundary faces for correct placement of boundary vertices upon refinement and to be able to use higher-order mappings.
It seems that you are trying to assign a SphericalManifold object to the central cell. This doesn't work properly because the manifold is singular at the center. Instead, you should only assign it to the boundary cells of the hyper ball parts of your triangulation. If the mesh doesn't look good enough after refining, you also might want to have a look at https://www.dealii.org/current/doxygen/deal.II/classTransfiniteInterpolationManifold.html and https://www.dealii.org/current/doxygen/deal.II/step_65.html.
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