Rheolef  7.1
an efficient C++ finite element environment
stokes_contraction.cc
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1 #include "rheolef.h"
26 using namespace rheolef;
27 using namespace std;
28 #include "contraction.h"
29 int main(int argc, char**argv) {
30  environment rheolef (argc, argv);
31  geo omega (argv[1]);
32  space Xh = contraction::velocity_space (omega, "P2");
33  space Qh (omega, "P1");
34  trial u (Xh), p (Qh);
35  test v (Xh), q (Qh);
36  form a = integrate (2*ddot(D(u),D(v)));
37  form b = integrate (-div(u)*q);
39  field ph (Qh, 0);
40  problem_mixed stokes (a, b);
41  stokes.solve (field(Xh,0), field(Qh,0), uh, ph);
42  dout << catchmark("inv_lambda") << 0 << endl
43  << catchmark("u") << uh
44  << catchmark("p") << ph;
45 }
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_mixed page for the full documentation
see the catchmark page for the full documentation
Definition: catchmark.h:67
see the environment page for the full documentation
Definition: environment.h:104
odiststream dout(cout)
see the diststream page for the full documentation
Definition: diststream.h:430
field_basic< Float > field
see the field page for the full documentation
Definition: field.h:419
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 contraction geometry: boundary conditions.
This file is part of Rheolef.
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:202
T ddot(const tensor_basic< T > &a, const tensor_basic< T > &b)
ddot(x,y): see the expression page for the full documentation
Definition: tensor.cc:278
std::enable_if< details::is_field_convertible< Expr >::value,details::field_expr_v2_nonlinear_terminal_field< typename Expr::scalar_type,typename Expr::memory_type,details::differentiate_option::gradient >>::type D(const Expr &expr)
D(uh): see the expression page for the full documentation.
std::enable_if< details::is_field_convertible< Expr >::value,details::field_expr_v2_nonlinear_terminal_field< typename Expr::scalar_type,typename Expr::memory_type,details::differentiate_option::divergence >>::type div(const Expr &expr)
div(uh): see the expression page for the full documentation
rheolef - reference manual
int main(int argc, char **argv)
static space velocity_space(geo omega, string approx)
Definition: contraction.h:41
static field velocity_field(space Xh)
Definition: contraction.h:49
Definition: sphere.icc:25
Definition: leveque.h:25
Float u(const point &x)