Hi,
I’m trying to implement homogeneous Neumann bc on part of the boundary in
tutorial example step-20.
The Neumann bc should be imposed strongly (as for Dirichlet bc in normal,
non-mixed, formulation). Is this correct?
In any case, I’m trying to impose the Neumann bc strongly using the
technique from step-22.
Running program I get the error:
---
An error occurred in line <1878> of file
</usr/local/dealii/dealii-8.4.1/include/deal.II/numerics/vector_tools.templates.h>
in function
void
dealii::VectorTools::{anonymous}::do_interpolate_boundary_values(const
M_or_MC<DoFHandlerType:: dimension, DoFHandlerType:: space_dimension>&,
const DoFHandlerType&, const typename dealii::FunctionMap<DoFHandlerType::
space_dimension>::type&, std::map<unsigned int, double>&, const
dealii::ComponentMask&, dealii::internal::int2type<dim_>) [with
DoFHandlerType = dealii::DoFHandler<2>; M_or_MC = dealii::Mapping; int dim_
= 2; typename dealii::FunctionMap<DoFHandlerType:: space_dimension>::type =
std::map<unsigned char, const dealii::Function<2, double>*,
std::less<unsigned char>, std::allocator<std::pair<const unsigned char,
const dealii::Function<2, double>*> > >]
The violated condition was:
cell->get_fe().is_primitive (i)
The name and call sequence of the exception was:
ExcMessage ("This function can only deal with requested boundary "
"values that correspond to primitive (scalar) base " "elements")
Additional Information:
This function can only deal with requested boundary values that correspond
to primitive (scalar) base elements
---
Can someone please help me to interpret the error message, or even better
guide me how to proceed implementing the Neumann bc?
Best regards, Erik
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