Rheolef  7.2
an efficient C++ finite element environment
 
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helmholtz_band_iterative.cc
Go to the documentation of this file.
1
25#include "rheolef.h"
26using namespace std;
27using namespace rheolef;
28#include "sphere.icc"
29int main (int argc, char**argv) {
30 environment rheolef(argc, argv);
31 geo lambda (argv[1]);
32 size_t d = lambda.dimension();
33 space Xh (lambda, "P1");
34 field phi_h = lazy_interpolate(Xh, phi);
35 band gamma_h (phi_h);
36 space Bh (gamma_h.band(), "P1");
37 trial u (Bh); test v (Bh);
38 form a = lazy_integrate (gamma_h, u*v + dot(grad_s(u),grad_s(v)));
39 field lh = lazy_integrate (gamma_h, f(d)*v);
40 field uh (Bh,0);
41 solver_option sopt;
42 sopt.max_iter = 10000;
43 sopt.tol = 1e-10;
44 minres (a.uu(), uh.set_u(), lh.u(), eye(), sopt);
45 dout << catchmark("phi") << phi_h
46 << catchmark("u") << uh;
47}
field lh(Float epsilon, Float t, const test &v)
see the band page for the full documentation
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 catchmark page for the full documentation
Definition catchmark.h:67
see the environment page for the full documentation
see the solver_option page for the full documentation
see the space page for the full documentation
see the test page for the full documentation
see the test page for the full documentation
int main()
Definition field2bb.cc:58
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_s(const Expr &expr)
grad_s(uh): see the expression page for the full documentation
int minres(const Matrix &A, Vector &x, const Vector &Mb, const Preconditioner &M, const solver_option &sopt=solver_option())
Definition minres.h:100
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
solver_basic< Float > eye()
see the eye page for the full documentation
Definition eye.h:74
std::enable_if< details::is_field_expr_quadrature_arg< Expr >::value, details::field_lazy_terminal_integrate< Expr > >::type lazy_integrate(const typename Expr::geo_type &domain, const Expr &expr, const integrate_option &iopt=integrate_option())
see the integrate page for the full documentation
rheolef::std enable_if ::type dot const Expr1 expr1, const Expr2 expr2 dot(const Expr1 &expr1, const Expr2 &expr2)
STL namespace.
rheolef - reference manual
The level set function for the sphere geometry.
Definition cavity_dg.h:29
Definition phi.h:25
Definition leveque.h:25