Rheolef  7.2
an efficient C++ finite element environment
dirichlet-nh.cc
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1
25#include "rheolef.h"
26using namespace rheolef;
27using namespace std;
28#include "cosinusprod_laplace.h"
29int main(int argc, char**argv) {
30 environment rheolef(argc, argv);
31 geo omega (argv[1]);
32 size_t d = omega.dimension();
33 space Xh (omega, argv[2]);
34 Xh.block ("boundary");
35 trial u (Xh); test v (Xh);
36 form a = integrate (dot(grad(u),grad(v)));
37 field lh = integrate (f(d)*v);
38 field uh (Xh);
39 space Wh (omega["boundary"], argv[2]);
40 uh ["boundary"] = lazy_interpolate(Wh, g(d));
41 problem p (a);
42 p.solve (lh, uh);
43 dout << uh;
44}
u_exact g
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 problem page for the full documentation
see the environment page for the full documentation
Definition: environment.h:121
see the space page for the full documentation
see the test page for the full documentation
see the test page for the full documentation
The cosinus product function – right-hand-side and boundary condition for the Laplace problem.
point u(const point &x)
int main(int argc, char **argv)
Definition: dirichlet-nh.cc:29
rheolef::details::is_vec dot
This file is part of Rheolef.
std::enable_if< details::has_field_rdof_interface< Expr >::value, details::field_expr_v2_nonlinear_terminal_field< typenameExpr::scalar_type, typenameExpr::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
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
STL namespace.
rheolef - reference manual
Definition: sphere.icc:25
Definition: leveque.h:25