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• W4283662078 abstract "The popularity of local meshless methods in the field of numerical simulations has increased greatly in recent years. This is mainly due to the fact that they can operate on scattered nodes and that they allow a direct control over the approximation order and basis functions. In this paper we analyse two popular variants of local strong form meshless methods, namely the radial basis function-generated finite differences (RBF-FD) using polyharmonic splines (PHS) augmented with monomials, and the weighted least squares (WLS) approach using only monomials. Our analysis focuses on the accuracy and stability of the numerical solution computed on scattered nodes in a two- and three-dimensional domain. We show that while the WLS variant is a better choice when lower order approximations are sufficient, the RBF-FD variant exhibits a more stable behavior and a higher accuracy of the numerical solution for higher order approximations, but at the cost of higher computational complexity." @default.
• W4283662078 created "2022-06-29" @default.
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• W4283662078 date "2022-05-23" @default.
• W4283662078 modified "2023-10-17" @default.
• W4283662078 title "Stability analysis of RBF-FD and WLS based local strong form meshless methods on scattered nodes" @default.
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• W4283662078 doi "https://doi.org/10.23919/mipro55190.2022.9803334" @default.
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