Rheolef  7.2
an efficient C++ finite element environment
streamf_obstacle_slip_move.cc

The stream function for the obstacle benchmark with slip boundary condition

#include "rheolef.h"
using namespace rheolef;
using namespace std;
int main (int argc, char** argv) {
environment rheolef (argc, argv);
field uh;
din >> uh;
point e0 (1,0);
uh = lazy_interpolate (uh.get_space(), e0 - uh);
string approx = "P" + to_string(uh.get_space().degree());
const geo& omega = uh.get_geo();
space Ph (omega, approx);
Ph.block ("wall");
Ph.block ("axis");
Ph.block ("downstream");
field psi_h (Ph,0.);
trial psi (Ph);
test xi (Ph);
integrate_option iopt;
iopt.ignore_sys_coord = true;
form a = integrate ( dot(grad(psi), grad(xi)), iopt);
field lh = integrate (dot(uh,bcurl(xi)));
problem p (a);
p.solve (lh, psi_h);
dout << catchmark("psi") << psi_h;
}
field lh(Float epsilon, Float t, const test &v)
see the field page for the full documentation
see the form page for the full documentation
see the geo page for the full documentation
see the point page for the full documentation
see the problem page for the full documentation
idiststream din(cin)
see the diststream page for the full documentation
Definition: diststream.h:464
odiststream dout(cout)
see the diststream page for the full documentation
Definition: diststream.h:467
see the space page for the full documentation
see the test page for the full documentation
see the test page for the full documentation
This file is part of Rheolef.
std::enable_if< details::has_field_rdof_interface< Expr >::value,details::field_expr_v2_nonlinear_terminal_field< typename Expr::scalar_type,typename Expr::memory_type,details::differentiate_option::gradient >>::type grad(const Expr &expr)
grad(uh): see the expression page for the full documentation
field_basic< T, M > lazy_interpolate(const space_basic< T, M > &X2h, const field_basic< T, M > &u1h)
see the interpolate page for the full documentation
Definition: field.h:871
rheolef::std enable_if ::type dot const Expr1 expr1, const Expr2 expr2 dot(const Expr1 &expr1, const Expr2 &expr2)
dot(x,y): see the expression page for the full documentation
Definition: vec_expr_v2.h:415
std::enable_if< details::is_field_expr_v2_nonlinear_arg< Expr >::value &&! is_undeterminated< Result >::value, Result >::type integrate(const geo_basic< T, M > &omega, const Expr &expr, const integrate_option &iopt, Result dummy=Result())
see the integrate page for the full documentation
Definition: integrate.h:211
std::enable_if< details::is_field_expr_v2_variational_arg< Expr >::value,details::field_expr_v2_variational_curl< Expr >>::type bcurl(const Expr &expr)
rheolef - reference manual
int main(int argc, char **argv)
Definition: sphere.icc:25