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Journal Articles Journal of Computational Physics Year : 2018

Asymptotic analysis for close evaluation of layer potentials

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Abstract

Accurate evaluation of layer potentials near boundaries is needed in many applications, including fluid-structure interactions and near-field scattering in nano-optics. When numerically evaluating layer potentials, it is natural to use the same quadrature rule as the one used in the Nyström method to solve the underlying boundary integral equation. However, this method is problematic for evaluation points close to boundaries. For a fixed number of quadrature points, N , this method incurs O(1) errors in a boundary layer of thickness O(1/N). Using an asymp-totic expansion for the kernel of the layer potential, we remove this O(1) error. We demonstrate the effectiveness of this method for interior and exterior problems for Laplace's equation in two dimensions.
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Dates and versions

hal-01530928 , version 1 (01-06-2017)
hal-01530928 , version 2 (05-10-2018)

Identifiers

  • HAL Id : hal-01530928 , version 2

Cite

Camille Carvalho, Shilpa Khatri, Arnold D Kim. Asymptotic analysis for close evaluation of layer potentials. Journal of Computational Physics, 2018. ⟨hal-01530928v2⟩
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