Re: [deal.II] How to apply Spherical Manifold

2023-02-19 Thread Luca Heltai
You should set the manifold ids of the two regions to different numbers, and add the second manifold with the second id you choose,  otherwise the second call is simply overwriting the first one, and they are both described by the last manifold. LucaIl giorno 20 feb 2023, alle ore 07:08, Deepika Ku

[deal.II] Reading Boundary Id in deal.ii

2023-02-19 Thread Lilanath Ghimire
I have meshed my cad model in gmesh and provided bounday ids for different surfaces by add physical group option and saved mesh in .msh file format. the first few lines of .msh file look like this: $MeshFormat 2.2 0 8 $EndMeshFormat $PhysicalNames 4 2 13 "bottom" 2 14 "top" 2 15 "inner" 2 16 "o

Re: [deal.II] B-spline basis functions to interpolate nodal values (control points) in 1d

2023-02-19 Thread Wolfgang Bangerth
On 2/15/23 06:50, Simon wrote: my objective is to do an 1d-approximation F(x) = N_i(x) P_i where N_i are cubic B-spline basis functions and P_i known nodal values (control points). To assemble my linear system, I have to compute the first and second derivatives of F at the quadrature points of

Re: [deal.II] solution (on a mesh) as boundary condition (on an adjacent mesh)

2023-02-19 Thread Wolfgang Bangerth
Greg, By two meshes matching do you mean there is no hanging nodes? Or they come from the same Triangulation object (and same DoFHandler object, for that matter)? I meant that a face of the triangulation used for the "old" slab exactly matches a face of the triangulation used for the "new"