A coupled FDM-FEM method for free surface flow interaction with thin elastic plate

Liao Kangping, Changhong Hu

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

A partitioned approach by the coupling finite difference method (FDM) and the finite element method (FEM) is developed for simulating the interaction between free surface flow and a thin elastic plate. The FDM, in which the constraint interpolation profile method is applied, is used for solving the flow field in a regular fixed Cartesian grid, and the tangent of the hyperbola for interface capturing with the slope weighting scheme is used for capturing free surface. The FEM is used for solving structural deformation of the thin plate. A conservative momentum-exchange method, based on the immersed boundary method, is adopted to couple the FDM and the FEM. Background grid resolution of the thin plate in a regular fixed Cartesian grid is important to the computational accuracy by using this method. A virtual structure method is proposed to improve the background grid resolution of the thin plate. Both of the flow solver and the structural solver are carefully tested and extensive validations of the coupled FDM-FEM method are carried out on a benchmark experiment, a rolling tank sloshing with a thin elastic plate.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalJournal of Marine Science and Technology (Japan)
Volume18
Issue number1
DOIs
Publication statusPublished - Mar 1 2013

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Flow interactions
free surface flow
finite difference method
Finite difference method
finite element method
Finite element method
Liquid sloshing
Flow fields
Interpolation
Momentum
flow field
interpolation
method
momentum
Experiments

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

A coupled FDM-FEM method for free surface flow interaction with thin elastic plate. / Kangping, Liao; Hu, Changhong.

In: Journal of Marine Science and Technology (Japan), Vol. 18, No. 1, 01.03.2013, p. 1-11.

Research output: Contribution to journalArticle

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