Hi all, I am confused with Newton's method's residual computation (i.e., L2 norm of the system residual vector) in Step-15 and Step-57.
In Step-15, to eliminate the residual component corresponding to the Dirichlet boundary condition, DOFTools::extract_boundary_dofs() is used to explicitly make those components zero. However, in Step-57, there seems no explicit treatment to eliminate the residual components on the Dirichlet boundary in the computation of residuals in each iteration within Newton's method. Is this because of the zero_constraints? Regards, Lixing -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/567aa57c-a053-4e1f-9beb-b32f857562bbn%40googlegroups.com.
