User profiles for Champike Attanayake

Champike Attanayake

Miami University
Verified email at MiamiOH.edu
Cited by 68

[PDF][PDF] Convergence of an immersed finite element method for semilinear parabolic interface problems

C Attanayake, D Senaratne - Appl. Math. Sci, 2011 - m-hikari.com
In this paper we analyze an immersed interface finite element method for second order
semilinear parabolic interface problems. Convergence of the semi discrete solution to the exact …

[PDF][PDF] An analytical approach to assess and compare the vulnerability risk of operating systems

PKH Kaluarachchilage, C Attanayake… - International Journal of …, 2020 - academia.edu
Operating system (OS) security is a key component of computer security. Assessing and
improving OSs strength to resist against vulnerabilities and attacks is a mandatory requirement …

Construction of discontinuous enrichment functions for enriched or generalized FEM's for interface elliptic problems in 1D

SH Chou, C Attanayake - Journal of Computational and Applied …, 2023 - Elsevier
We introduce an enriched unfitted finite element method to solve 1D elliptic interface problems
with discontinuous solutions, including those having implicit or Robin-type interface jump …

Flux recovery and superconvergence of quadratic immersed interface finite elements

SH Chou, C Attanayake - arXiv preprint arXiv:1512.04563, 2015 - arxiv.org
We introduce a flux recovery scheme for the computed solution of a quadratic immersed
finite element method. The recovery is done at nodes and interface point first and by …

[PDF][PDF] SUPERCONVERGENCE AND FLUX RECOVERY FOR AN ENRICHED FINITE ELEMENT METHOD.

C Attanayake, SH Chou - International Journal of Numerical …, 2021 - math.ualberta.ca
We introduce a flux recovery scheme for an enriched finite element method applied to an
interface diffusion equation with absorption. The method is a variant of the finite element …

Construction of Discontinuous Enrichment Functions for Enriched FEM's for Interface Elliptic Problems in 1D

SH Chou, C Attanayake - arXiv preprint arXiv:2208.04396, 2022 - arxiv.org
We introduce an enriched unfitted finite element method to solve 1D elliptic interface problems
with discontinuous solutions, including those having implicit or Robin-type interface jump …

High-Order Enriched Finite Element Methods for Elliptic Interface Problems with Discontinuous Solutions

C Attanayake, SH Chou, Q Deng - arXiv preprint arXiv:2204.07665, 2022 - arxiv.org
Elliptic interface problems whose solutions are $C^0$ continuous have been well studied
over the past two decades. The well-known numerical methods include the strongly stable …

[PDF][PDF] An immersed interface method for Pennes' bioheat transfer equation

C Attanayake, SH Chou - Discret. Contin. Dyn. Sys. Ser. B, 2015 - researchgate.net
We consider an immersed finite element method for solving one dimensional Pennes bioheat
transfer equation with discontinuous coefficients and nonhomogenous flux jump condition. …

[PDF][PDF] Existence of a moving attractor for semi-linear parabolic equations

C Attanayake, D Senaratne, A Kodippili - Electronic Journal of …, 2013 - real.mtak.hu
We analyze the existence of a moving attractor for a semi-linear parabolic equation. The
analysis is carried out by using a coordinate transformation to obtain the equation in moving …

[PDF][PDF] Short-Term Service-Learning in an Introductory Mathematics Course

C Attanayake - AURCO Journal, 2014 - aurco.org
This study examines the effect of a small-scale service-learning experience on college
undergraduates. The example in this paper illustrates how shortterm service-learning can be …