Vector Vertex::normalAngleWeighted( void ) const
// returns unit vertex normal using tip angle weights
{
Vector N(0.,0.,0.);
HalfEdgeIter heBegin, he;
FaceIter face;
const Vector& p_i = this->position;
Vector vec1, vec2;
he = this->he->flip;
vec1 = (he->vertex->position - p_i).unit();
face = he->face;
he = heBegin = he->next->flip;
do
{
vec2 = (he->vertex->position - p_i).unit();
N += face->normal() * atan2( cross(vec1,vec2).norm(), -dot(vec1,vec2) );
vec1 = vec2;
face = he->face;
he = he->next->flip;
}
while( he != heBegin );
return N.unit();
}
double UpscalerBase<Traits>::computeAverageVelocity(const FlowSol& flow_solution,
const int flow_dir,
const int pdrop_dir) const
{
double side1_flux = 0.0;
double side2_flux = 0.0;
double side1_area = 0.0;
double side2_area = 0.0;
int num_faces = 0;
int num_bdyfaces = 0;
int num_side1 = 0;
int num_side2 = 0;
for (CellIter c = ginterf_.cellbegin(); c != ginterf_.cellend(); ++c) {
for (FaceIter f = c->facebegin(); f != c->faceend(); ++f) {
++num_faces;
if (f->boundary()) {
++num_bdyfaces;
int canon_bid = bcond_.getCanonicalBoundaryId(f->boundaryId());
if ((canon_bid - 1)/2 == flow_dir) {
double flux = flow_solution.outflux(f);
double area = f->area();
double norm_comp = f->normal()[flow_dir];
// std::cout << "bid " << f->boundaryId() << " area " << area << " n " << norm_comp << std::endl;
if (canon_bid - 1 == 2*flow_dir) {
++num_side1;
if (flow_dir == pdrop_dir && flux > 0.0) {
#ifdef VERBOSE
std::cerr << "Flow may be in wrong direction at bid: " << f->boundaryId()<<" (canonical: "<<canon_bid
<< ") Magnitude: " << std::fabs(flux) << std::endl;
#endif
// OPM_THROW(std::runtime_error, "Detected outflow at entry face: " << face);
}
side1_flux += flux*norm_comp;
side1_area += area;
} else {
assert(canon_bid - 1 == 2*flow_dir + 1);
++num_side2;
if (flow_dir == pdrop_dir && flux < 0.0) {
#ifdef VERBOSE
std::cerr << "Flow may be in wrong direction at bid: " << f->boundaryId()
<< " Magnitude: " << std::fabs(flux) << std::endl;
#endif
// OPM_THROW(std::runtime_error, "Detected inflow at exit face: " << face);
}
side2_flux += flux*norm_comp;
side2_area += area;
}
}
}
}
}
// std::cout << "Faces: " << num_faces << " Boundary faces: " << num_bdyfaces
// << " Side 1 faces: " << num_side1 << " Side 2 faces: " << num_side2 << std::endl;
// q is the average velocity.
return 0.5*(side1_flux/side1_area + side2_flux/side2_area);
}
