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research article

On the fast assemblage of finite element matrices with application to nonlinear heat transfer problems

Voet, Yannis  
January 1, 2023
Applied Mathematics And Computation

The finite element method is a well-established method for the numerical solution of partial differential equations (PDEs), both linear and nonlinear. However, the repeated re -assemblage of finite element matrices for nonlinear PDEs is frequently pointed out as one of the bottlenecks in the computations. The second bottleneck being the large and numer-ous linear systems to be solved arising from the use of Newton's method to solve nonlinear systems of equations. In this paper, we will address the first issue. We will see how under mild assumptions the assemblage procedure may be rewritten using a completely loop -free algorithm. Our approach leads to a small matrix-matrix multiplication for which we may count on highly optimized algorithms.(c) 2022 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )

  • Details
  • Metrics
Type
research article
DOI
10.1016/j.amc.2022.127516
Web of Science ID

WOS:000864697000006

Author(s)
Voet, Yannis  
Date Issued

2023-01-01

Publisher

ELSEVIER SCIENCE INC

Published in
Applied Mathematics And Computation
Volume

436

Article Number

127516

Subjects

Mathematics, Applied

•

Mathematics

•

finite element method

•

matrix assembly

•

mass matrix

•

stiffness matrix

•

vectorization

•

efficient

•

quadrature

•

algorithm

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
MNS  
Available on Infoscience
January 16, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/193694
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