On 7/7/22 02:34, Simon Wiesheier wrote:
Just to make sure that I chose a reasonable approach:
//create FEValues object whenever I need it, that is,
'number_of_cells*number_of_qps_per_cell' times
FEValues<2> fe_values(dof_handler.get_fe(),
Quadrature<2>(m
Just to make sure that I chose a reasonable approach:
//create FEValues object whenever I need it, that is,
'number_of_cells*number_of_qps_per_cell' times
FEValues<2> fe_values(dof_handler.get_fe(),
Quadrature<2>(my_point_in_ref_coords),
update_gradients);
f
On 7/5/22 09:28, Simon Wiesheier wrote:
What is the approach to achieve this?
My only idea is to create a new FEValues object for each quadrature point and
pass an appropriate Quadrature object. But seems to be very inefficient.
This is basically what the VectorTools::point_value() and
Vecto
Dear Martin,
thanks for pointing out to the FEPointEvaluation class.
However, my intent is to compute the gradients of shape functions in real
coordinates.
" so in that case the recommendation would be to use FEValues, despite that
being terribly inefficient."
What is the approach to achieve thi
Dear Simon,
We have the class FEPointEvalation,
https://dealii.org/developer/doxygen/deal.II/classFEPointEvaluation.html
, which implements the operation of evaluating a solution at arbitrary
points (as handed in as an array to points in unit coordinates). To do
this for positions in real coo
Dear all:
I have to compute the gradient with respect to real space co-ordinates of
the shape functions belonging to a FE_Q element at arbitrary points in the
element, that is, not only at quadrature points.
What is the way to do this in dealii?
FEValues provides shape function values, gradien
