CylMesh.py 文件源码

def edgeCurl(self):
        """The edgeCurl property."""
        if self.nCy > 1:
            raise NotImplementedError('Edge curl not yet implemented for '
                                      'nCy > 1')
        if getattr(self, '_edgeCurl', None) is None:
            # 1D Difference matricies
            dr = sp.spdiags((np.ones((self.nCx+1, 1))*[-1, 1]).T, [-1, 0],
                            self.nCx, self.nCx, format="csr")
            dz = sp.spdiags((np.ones((self.nCz+1, 1))*[-1, 1]).T, [0, 1],
                            self.nCz, self.nCz+1, format="csr")

            # 2D Difference matricies
            Dr = sp.kron(sp.identity(self.nNz), dr)
            Dz = -sp.kron(dz, sp.identity(self.nCx))

            A = self.area
            E = self.edge
            # Edge curl operator
            self._edgeCurl = (utils.sdiag(1/A)*sp.vstack((Dz, Dr)) *
                              utils.sdiag(E))
        return self._edgeCurl