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arXiv 1111.6212math.APmath.SP
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用边界函数的二阶偏导数解狄利克雷问题

A solution of Dirichlet problem using second partial derivatives of boundary function

Harry Yosh

摘要:

在边界元法中,用不带边界条件的格林函数解带狄利克雷边界条件的拉普拉斯方程。为了确定边界上解的梯度,在大多数实际情况下,我们需要数值求解边界积分方程。这里我们讨论避免求解边界积分方程的另一种方法。它是基于泊松方程的解决方案,具有由边界函数指定的边界上的奇异性,并表明它适用于任意形状的区域,并大大减少计算成本。

英文摘要:

In Boundary Element Method, Green's function with no boundary conditions is used for solving Laplace's equation with Dirichlet boundary condition. To determine the gradient of solution on the boundary, we need to solve the boundary integral equation numerically in most practical cases. Here we discuss the alternative method to avert solving that boundary integral equation. It is based on the solution for Poisson's equation which has the singularity on the boundary specified by the boundary function and shown it is applicable to arbitrary shaped domain and reduces calculation cost considerably.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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