RT Journal Article
T1 Self-Adaptive hp Finite Element Method with Iterative Mesh Truncation Technique Accelerated with Adaptive Cross Approximation
A1 Barrio Garrido, Rosa María
A1 García Castillo, Luis Emilio
A1 Gómez Revuelto, Ignacio
A1 Salazar Palma, Magdalena
AB To alleviate the computational bottleneck of a powerful two-dimensional self-adaptive hp finite element method (FEM) for the analysis of open region problems, which uses an iterative computation of the Integral Equation over a fictitious boundary for truncating the FEM domain, we propose the use of Adaptive Cross Approximation (ACA) to effectively accelerate the computation of the Integral Equation. It will be shown that in this context ACA exhibits a robust behavior, yields good accuracy and compression levels up to 90%, and provides a good fair control of the approximants, which is a crucial advantage for hp adaptivity. Theoretical and empirical results of performance (computational complexity) comparing the accelerated and non-accelerated versions of the method are presented. Several canonical scenarios are addressed to resemble the behavior of ACA with h, p and hp adaptive strategies, and higher order methods in general.
PB Elsevier
SN 0898-1221
YR 2016
FD 2016-05-01
LK https://hdl.handle.net/10016/35780
UL https://hdl.handle.net/10016/35780
LA eng
NO This work has been supported by the Ministerio de Educacion y Ciencia, Spain, under Projects TEC2007-65214/TCM, TEC2010-18175/TCM, EC2013-47753-C3-2 and RTC 2014-23 80-4.
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RD 1 sept. 2024