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Numerical benchmarking of fluid–structure interaction: An isogeometric finite element approach

Abstract

In this paper we describe and evaluate an isogeometric finite element program, IFEM-FSI, for doing coupled fluid–structure interaction simulations. We investigate the role played by employing higher polynomial orders and higher regularity for solving a well known benchmark problem for flow past a circular cylinder with an attached flexible bar at Reynolds number Re=100. Furthermore, we investigate the sensitivity to resolution in the fluid mesh as well as stiffness distribution in the mesh movement algorithm. Mesh quality is also assessed. Our simulations indicate that quadratic and cubic spline elements give better estimation of lift, drag and displacements than linear spline elements

Category

Academic article

Client

  • Research Council of Norway (RCN) / 216465
  • Research Council of Norway (RCN) / 193823
  • Notur/NorStore / NN9322K/1589

Language

English

Author(s)

Affiliation

  • Norwegian University of Science and Technology
  • SINTEF Digital / Mathematics and Cybernetics

Year

2016

Published in

Ocean Engineering

ISSN

0029-8018

Publisher

Elsevier

Volume

124

Page(s)

324 - 339

View this publication at Cristin