/usr/share/doc/rheolef-doc/examples/navier_stokes_cavity.cc is in rheolef-doc 6.7-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | #include "rheolef.h"
using namespace rheolef;
using namespace std;
#include "navier_stokes_solve.icc"
#include "navier_stokes_criterion.icc"
#include "cavity.icc"
int main (int argc, char**argv) {
environment rheolef (argc, argv);
if (argc < 2) {
cerr << "usage: " << argv[0] << " <geo> <Re> <err> <n_adapt>" << endl;
exit (1);
}
geo omega (argv[1]);
adapt_option_type options;
Float Re = (argc > 2) ? atof(argv[2]) : 100;
options.err = (argc > 3) ? atof(argv[3]) : 1e-2;
size_t n_adapt = (argc > 4) ? atoi(argv[4]) : 5;
Float delta_t = 0.05;
options.hmin = 0.004;
options.hmax = 0.1;
space Xh = cavity_space (omega, "P2");
space Qh (omega, "P1");
field uh = cavity_field (Xh, 1.0);
field ph (Qh, 0);
field fh (Xh, 0);
for (size_t i = 0; true; i++) {
size_t max_iter = 1000;
Float tol = 1e-5;
navier_stokes_solve (Re, delta_t, fh, uh, ph, max_iter, tol, &derr);
odiststream o (omega.name(), "field");
o << catchmark("Re") << Re << endl
<< catchmark("delta_t") << delta_t << endl
<< catchmark("u") << uh
<< catchmark("p") << ph;
o.close();
if (i >= n_adapt) break;
field ch = navier_stokes_criterion (Re,uh);
omega = adapt (ch, options);
o.open (omega.name(), "geo");
o << omega;
o.close();
Xh = cavity_space (omega, "P2");
Qh = space (omega, "P1");
uh = cavity_field (Xh, 1.0);
ph = field (Qh, 0);
fh = field (Xh, 0);
}
}
|