三维位势问题的梯度边界积分方程的新解法 1)
董荣荣,张超,张耀明(
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A NEW METHOD FOR SOLVING THE GRADIENT BOUNDARY INTEGRAL EQUATION FOR THREE DIMENSIONAL POTENTIAL PROBLEMS 1)
Dong Rongrong,Zhang Chao,Zhang Yaoming()
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图7. 边界法向梯度${\partial u} /{\partial {\pmb n}}$和梯度${\partial u} /{\partial x_1 }$的收敛曲线
Fig. 7. Relative errors for the boundary quantities and derivative vs. the number of boundary elements
