compute_boundary_flux Subroutine

   subroutine compute_boundary_flux(mesh, flow, bc, face_flux, local_flux)
      type(mesh_t), intent(in) :: mesh
      type(flow_mpi_t), intent(in) :: flow
      type(bc_set_t), intent(in) :: bc
      real(rk), intent(in) :: face_flux(:)
      real(rk), intent(out) :: local_flux

      integer :: f, owner, btype

      local_flux = zero

      do f = 1, mesh%nfaces
         if (mesh%faces(f)%neighbor /= 0) cycle

         btype = patch_type_for_face(mesh, bc, f)

         if (btype == bc_periodic) cycle

         owner = mesh%faces(f)%owner

         if (.not. flow%owned(owner)) cycle

         local_flux = local_flux + face_flux(f)
      end do
   end subroutine compute_boundary_flux