Re: [deal.II] Re: Extracting volume data to the boundary

2019-09-10 Thread Alberto Salvadori
Thank you very much, Wolfgang, crystal clear as always. It is still unclear to me, though, how to reinit() the FEFaceValues for the cell making use of the map returned by the extract_boundary_mesh() function. I learned to reinit FEFaceValues as: fe_face_values.reinit (cell, face_number); Is ther

Re: [deal.II] Re: Extracting volume data to the boundary

2019-09-09 Thread Wolfgang Bangerth
> In solving a Laplace-Beltrami problem on an advecting surface one should > identify the Gauss points on the manifold dim-1 cell and retrieve at > such locations relevant information from the solution of the advection > problem, using the dim dof_handler of the volume. I wonder how to > conn

[deal.II] Re: Extracting volume data to the boundary

2019-09-09 Thread Alberto Salvadori
Dear community in case of use, I attempted to write a small code that seems to solve the issue of linking manifold cells to volume cells. As first, two maps are defined: *// maps* *// the map surface_to_volumefaces_mapping contains the outcome of the method extract_boundary_mesh and conn

[deal.II] Re: Extracting volume data to the boundary

2019-09-07 Thread Alberto Salvadori
Dear community I apologize if the question was too generic. I attempt here to be more precise, asking for some suggestions. In solving a Laplace-Beltrami problem on an advecting surface one should identify the Gauss points on the manifold dim-1 cell and retrieve at such locations relevant info