/usr/share/doc/rheolef-doc/examples/dirichlet-nh.cc is in rheolef-doc 6.7-6.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | #include "rheolef.h"
using namespace rheolef;
using namespace std;
#include "cosinusprod_laplace.icc"
int main(int argc, char**argv) {
environment rheolef(argc, argv);
geo omega (argv[1]);
size_t d = omega.dimension();
space Xh (omega, argv[2]);
Xh.block ("boundary");
trial u (Xh); test v (Xh);
form a = integrate (dot(grad(u),grad(v)));
field lh = integrate (f(d)*v);
field uh (Xh);
space Wh (omega["boundary"], argv[2]);
uh ["boundary"] = interpolate(Wh, g(d));
solver sa (a.uu());
uh.set_u() = sa.solve (lh.u() - a.ub()*uh.b());
dout << uh;
}
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