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新型径向基函数配点法及核径向基函数及其应用

New RBF collocation methods and kernel RBF with applications

W. Chen

AI总结:

本研究提出了多种新型径向基函数离散方法,包括对称边界结点法、边界粒子法、改进Kansa法及最小二乘配点法,并简要介绍五种核RBF,用于求解偏微分方程。

摘要:

本研究开发了几种新颖的偏微分方程径向基函数(RBF)离散格式。对于边界型方法,我们推导了间接和直接对称边界结点法。基于多重互易原理,引入了边界粒子法,用于一般非齐次问题,无需使用内部结点。对于域型格式,利用格林积分,我们开发了一种新颖的Hermite RBF格式,称为改进的Kansa方法,该方法显著减少了近边界结点处的计算误差。为避免吉布斯现象,我们提出了最小二乘RBF配点格式。最后,简要介绍了五种核RBF。

英文摘要:

A few novel radial basis function (RBF) discretization schemes for partial differential equations are developed in this study. For boundary-type methods, we derive the indirect and direct symmetric boundary knot methods. Based on the multiple reciprocity principle, the boundary particle method is introduced for general inhomogeneous problems without using inner nodes. For domain-type schemes, by using the Green integral we develop a novel Hermite RBF scheme called the modified Kansa method, which significantly reduces calculation errors at close-to-boundary nodes. To avoid Gibbs phenomenon, we present the least square RBF collocation scheme. Finally, five types of the kernel RBF are also briefly presented.

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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