Space-time finite element techniques for computation of fluid-structure interactions

Tayfun E. Tezduyar, Sunil Sathe, Ryan Keedy, Keith Stein

Research output: Contribution to journalArticle

234 Citations (Scopus)

Abstract

We describe the space-time finite element techniques we developed for computation of fluid-structure interaction (FSI) problems. Among these techniques are the deforming-spatial-domain/stabilized space-time (DSD/SST) formulation and its special version, and the mesh update methods, including the solid-extension mesh moving technique (SEMMT). Also among these techniques are the block-iterative, quasi-direct and direct coupling methods for the solution of the fully discretized, coupled fluid and structural mechanics equations. We present some test computations for the mesh moving techniques described. We also present numerical examples where the fluid is governed by the Navier-Stokes equations of incompressible flows and the structure is governed by the membrane and cable equations. Overall, we demonstrate that the techniques we have developed have increased the scope and accuracy of the methods used in computation of FSI problems.

Original languageEnglish
Pages (from-to)2002-2027
Number of pages26
JournalComputer Methods in Applied Mechanics and Engineering
Volume195
Issue number17-18
DOIs
Publication statusPublished - 2006 Mar 15
Externally publishedYes

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Keywords

  • Fluid-structure interactions
  • FSI
  • Iterative and direct coupling techniques
  • Mesh update techniques
  • Space-time finite elements

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Computer Science Applications

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