On 1/31/22 10:22, Ali Seddiq wrote:
I am trying to mimic step-7 implementation of Neumann boundary condition in
the case of a vector-valued problem.
I did some modifications as shown in the below, but it doesn't work as expected;
const FEValuesExtractors::Scalar pressure(0);
.....
cell_rhs(i) +=
(fe_face_values[pressure].value(i, q_point) *
neumann_value *
fe_face_values.JxW(q_point));
I tried to replicate step-20 and related documentation on vector problems but
haven't yet been able to figure out the solution.
So any help is much appreciated.
Ali -- a good place to always start is by asking what "it doesn't work as
expected" precisely is. We don't know what the problem is you are trying to
solve, we don't know whether you get compiler errors, whether you get runtime
errors, whether the solution looks wrong, in which way it looks wrong, etc.
Debugging typically starts with asking *yourself* precisely what doesn't work,
and what that might mean for where the bug is.
Best
W.
--
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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