Numerical calculation of regular and singular integrals in boundary integral equations using Clenshaw–Curtis quadrature rules

L Chen, X Li - Engineering Analysis with Boundary Elements, 2023 - Elsevier
The efficient and accurate calculation of integrals, especially singular and nearly singular
integrals, poses a great challenge in boundary integral equation (BIE) methods. In this …

A bivariate Filon–Clenshaw–Curtis method of the highly oscillatory integrals on a square

J Gao, G Chang - Journal of Computational and Applied Mathematics, 2024 - Elsevier
We present a generalised bivariate Filon–Clenshaw–Curtis cubature for the double highly
oscillatory integrals on the square. Under the Hermite interpolatory conditions meeting an …

Approximation of Cauchy-type singular integrals with high frequency Fourier kernel

S Khan, S Zaman - Engineering Analysis with Boundary Elements, 2021 - Elsevier
Two types of splitting algorithms are proposed for approximation of Cauchy type singular
integrals having high frequency Fourier kernel. To evaluate non-singular integrals, modified …

A boundary point interpolation method for acoustic problems with particular emphasis on the calculation of Cauchy principal value integrals

L Chen, X Li - Computers & Structures, 2024 - Elsevier
A boundary point interpolation method (BPIM) is presented in this paper for numerical
solving acoustic problems. The BPIM is a boundary-type meshless method that combines …

A generalization of Filon–Clenshaw–Curtis quadrature for highly oscillatory integrals

J Gao, A Iserles - BIT Numerical Mathematics, 2017 - Springer
Abstract The Filon–Clenshaw–Curtis method (FCC) for the computation of highly oscillatory
integrals is known to attain surprisingly high precision. Yet, for large values of frequency ω ω …

On error bounds of Filon-Clenshaw-Curtis quadrature for highly oscillatory integrals

S Xiang, G He, YJ Cho - Advances in Computational Mathematics, 2015 - Springer
In this paper, we aim to derive some error bounds for Filon-Clenshaw-Curtis quadrature for
highly oscillatory integrals. Thanks to the asymptotics of the coefficients in the Chebyshev …

[HTML][HTML] On uniform approximations to hypersingular finite-part integrals

S Xiang, C Fang, Z Xu - Journal of Mathematical Analysis and Applications, 2016 - Elsevier
In this paper, new uniform approximation schemes for computation of hypersingular finite-
part integrals are studied. The methods are verified to be supremely qualified for oscillatory …

[HTML][HTML] An improved algorithm for the evaluation of Cauchy principal value integrals of oscillatory functions and its application

G He, S Xiang - Journal of Computational and Applied Mathematics, 2015 - Elsevier
A new interpolatory-type quadrature rule is proposed for the numerical evaluation of Cauchy
principal value integrals of oscillatory kind⨍− 1 1 f (x) x− τ ei ω xdx, where τ∈(− 1, 1). The …

Error analysis of the extended Filon-type method for highly oscillatory integrals

J Gao, A Iserles - Research in the Mathematical Sciences, 2017 - Springer
We investigate the impact of adding inner nodes for a Filon-type method for highly oscillatory
quadrature. The error of Filon-type method is composed of asymptotic and interpolation …

[HTML][HTML] Computation of integrals with oscillatory singular factors of algebraic and logarithmic type

H Kang, C Ling - Journal of computational and applied mathematics, 2015 - Elsevier
In this paper, we present the Clenshaw–Curtis–Filon methods and the higher order methods
for computing many classes of oscillatory integrals with algebraic or logarithmic singularities …