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边界元法在数值解法中利用拉普拉斯方程的基本解和格林公式,简单易行,可以解决物性参数分区均匀的一类正演问题(电法和重、磁法勘探问题),也可计算向上延拓.特别是将它与有限元法结合,解决复杂边值问题,可取得较理想的效果. 边界元法的基本计算方法有直接法和间接法两种. 边界元法的直接法现以磁法勘探正问题为例来说明. 解磁法正问题可归结为在求解区域Ω上解拉普拉斯方程的边值问题,并可用边界元法求解,
In the numerical method, the boundary element method is easy to be solved by using the basic solution and Green’s formula of Laplace equation. It can solve a series of forward problems (electrical method and heavy and magnetic exploration problems) with uniform zoning of physical parameters. The calculation of upward continuation.Especially with its combination with finite element method to solve the complex boundary value problem, can achieve more satisfactory results.Britical element method of the basic calculation methods are direct and indirect methods.Before the direct element method Now take the magnetic exploration positive problem as an example to illustrate.A positive problem of the demagnetization method can be attributed to solving the boundary value problem of the Laplace equation in the area Ω and can be solved by the boundary element method,