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• W2083761315 endingPage "2236" @default.
• W2083761315 startingPage "2223" @default.
• W2083761315 abstract "When the Helmholtz equation is solved by numerical methods as, e.g., the finite element method (FEM), the solution suffers from the so-called pollution effect. The pollution is mainly caused by the dispersion, meaning that the numerical wave number disagrees with the wave number of the exact solution. This leads to inaccurate results, especially for high wave numbers. In order to obtain acceptable results also for higher wave numbers, either a high element resolution or elements of a higher order can be used. For either option the consequence is an increased computation time and memory capacity. Meshfree methods as the element free Galerkin method (EFGM) and the radial point interpolation method (RPIM) are not dispersion-free either, but it has been shown that meshfree methods are able to reduce the dispersion significantly. Both methods offer several parameters, which can be modified in order to obtain optimal results with respect to the dispersion effect. This work presents an exhaustive parameter study on both the EFGM and the RPIM. It is shown, that the methods can be significantly improved if certain parameters as, e.g., weighting functions, shape parameters, size of the influence domain, are chosen appropriately." @default.
• W2083761315 created "2016-06-24" @default.
• W2083761315 creator A5059566866 @default.
• W2083761315 creator A5086287224 @default.
• W2083761315 date "2011-06-01" @default.
• W2083761315 modified "2023-09-27" @default.
• W2083761315 title "Optimized meshfree methods for acoustics" @default.
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• W2083761315 doi "https://doi.org/10.1016/j.cma.2011.03.011" @default.
• W2083761315 hasPublicationYear "2011" @default.
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