Abstract
A new approach (Domain-Element Local Integro-Differential-Equation Method -- DELIDEM) is developed and implemented for the solution of 2-D potential problems in materials with arbitrary continuous variation of the material parameters. The domain is discretized into conforming elements for the polynomial approximation and the local integro-differential equations (LIDE) are considered on subdomains determined by domain elements and collocated at interior nodes. At the boundary nodes, either the prescribed boundary conditions or the LIDE are collocated. The applicability and reliability of the method is tested for several numerical examples.
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Sladek, V., Sladek, J. & Zhang, C. Local integro-differential equations with domain elements for the numerical solution of partial differential equations with variable coefficients. J Eng Math 51, 261–282 (2005). https://doi.org/10.1007/s10665-004-3692-y
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DOI: https://doi.org/10.1007/s10665-004-3692-y