Dear all


I have a code that works fine. Now, I am working to change the code 
structure to use “workstream”. The new code works fine without adaptive 
refinement. However, when the mesh is refined and the triangulation has 
hanging node, a constant residual error remains during Newton iteration. I 
cant find source of the problem. 

There are two “constraints matrix”. On of them for “Newton update” and one 
for “hanging nodes”. The constraints matrix are merged and is used to 
determine error as:


BlockVector<*double*> error_ud(dofs_per_block);

*for* (*unsigned* *int* i = 0; i < dof_handler_ref.n_dofs(); ++i)

*if* (!constraints_update.*is_constrained*(i))

error_ud(i) = system_rhs(i);


error_update.norm = error_ud.l2_norm();



Regards

Pasha

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