Mesh-free approach to Helmholtz equation based on radial basis functions
DOI:
https://doi.org/10.26636/jtit.2005.2.302Keywords:
Helmholtz equation, radial basis functions, meshfree method, cylindrical waveguidesAbstract
Recently, a radial basis functions (RBFs) method, which was originally proposed for interpolation problems, has been developed and applied to solve partial differential equations and eigenproblems. Properties of that method (mesh-free algorithm) allows one to use it in many areas, including electromagnetics. In this paper the mesh-free RBF method for solving Helmholtz equation was applied and a new adaptive algorithm for defining the set of interpolation centers was proposed. Using the proposed approach the cutoff wavelengths and the field distribution in cylindrical waveguides of arbitrary cross-section were calculated with a high accuracy.
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