scalar and scalar_v2 report written

source/scalar/solve.cpp

@@ -37,7 +37,7 @@ void scalar::Solver::step()
             }
             else if (_parameters->method == Method::upwind)
             {
-                face_scalar = (face_velocity < 0.0) ? cell->neighbors[p]->scalar : cell->scalar;
+                face_scalar = (face_velocity > 0.0) ? cell->neighbors[p]->scalar : cell->scalar;
             }
             else
             {