Hamed, [...] > Considering for example the term [*M*+k*theta**A*]**U* in my right-hand > side, since the mass matrix(M) and laplace matrix(A) in the local level > have the size of *dofs_per_cell * dofs_per_cell* I need to have a local > solution vector to multiply with them. However, > FEValuesBase::get_function_values returns solution values at quadrature > points in a vector with the size of *n_q_points*. I was wondering if > there is a function that returns nodal solution values for every cell. > There are different possibilities to construct the right-hand side. Often, you assemble your matrix at the same time as the right-hand side. In this case, you need the function values/gradients/... at the quadrature points of quadrature rule and you can use FEValuesBase::get_function_values. If you already have local matrices you want a local solution vector to multiply with, you can just extract the desired values via
Vector<double> local_values(dofs_per_cell); for (unsigned int i=0; i<dofs_per_cell; ++i) local_values(i) = solution(local_dof_indices[i]); Best, Daniel -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
