节点梯度光滑有限元配点法1)
樊礼恒, 王东东, 刘宇翔, 杜洪辉

A FINITE ELEMENT COLLOCATION METHOD WITH SMOOTHED NODAL GRADIENTS1)
Fan Liheng, Wang Dongdong, Liu Yuxiang, Du Honghui
图14 方形区域势问题梯度解$u_{,x}^{ h} $误差对比
Fig.14 Error comparison of the gradient solution $u_{,x}^{ h} $ for the square region potential problem