30int main(
int argc,
char**argv) {
33 space Xh (omega, argv[2]);
34 size_t n_max = (argc > 3) ? atoi(argv[3]) : 1000;
35 size_t strip = (argc > 4) ?
string(argv[4]) ==
"true" :
false;
36 size_t p = (argc > 5) ? atoi(argv[5]) : min(Xh.degree()+1,
bdf::pmax);
47 vector<field> phi_h (
p+1);
49 dout << event (0, phi_h[0]);
50 for (
size_t n = 1; n <= n_max; n++) {
52 if (n % 10 == 0) derr <<
"[" << n <<
"]";
55 for (
size_t i = 1; i <= pn; i++)
63 pb.solve (
lh, phi_h[0]);
64 check_macro (phi_h[0].max_abs() < 100,
"BDF failed -- HINT: decrease delta_t");
65 if (!strip || n == n_max) dout << event (t, phi_h[0]);
66 for (
size_t i = min(
p,pn+1); i >= 1; i--)
67 phi_h[i] = phi_h[i-1];
BDF(p) backward differentiation formula – coefficients.
field lh(Float epsilon, Float t, const test &v)
see the Float page for the full documentation
see the branch page for the full documentation
see the field 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
see the space page for the full documentation
see the test page for the full documentation
see the test page for the full documentation
check_macro(expr1.have_homogeneous_space(Xh1), "dual(expr1,expr2); expr1 should have homogeneous space. HINT: use dual(interpolate(Xh, expr1),expr2)")
Float alpha[pmax+1][pmax+1]
This file is part of Rheolef.
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
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_h(const Expr &expr)
grad_h(uh): see the expression page for the full documentation
details::field_expr_v2_nonlinear_terminal_function< details::normal_pseudo_function< Float > > normal()
normal: see the expression page for the full documentation
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
rheolef::std enable_if ::type dot const Expr1 expr1, const Expr2 expr2 dot(const Expr1 &expr1, const Expr2 &expr2)
rheolef - reference manual
The Zalesak full disk benchmark – the exact solution.