Finite element analysis of sloshing and hydroelastic vibrations under gravity

Alfredo Bermúdez; Rodolfo Rodríguez

ESAIM: Mathematical Modelling and Numerical Analysis (2010)

  • Volume: 33, Issue: 2, page 305-327
  • ISSN: 0764-583X

Abstract

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This paper deals with a finite element method to solve fluid-structure interaction problems. More precisely it concerns the numerical computation of harmonic hydroelastic vibrations under gravity. It is based on a displacement formulation for both the fluid and the solid. Gravity effects are included on the free surface of the fluid as well as on the liquid-solid interface. The pressure of the fluid is used as a variable for the theoretical analysis leading to a well posed mixed linear eigenvalue problem. Lowest order triangular Raviart-Thomas elements are used for the fluid and classical piecewise linear elements for the solid. Transmission conditions at the fluid-solid interface are taken into account in a weak sense yielding a non conforming discretization. The method does not present spurious or circulation modes for nonzero frequencies. Convergence is proved and optimal error estimates are given. Finally, numerical results are shown.

How to cite

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Bermúdez, Alfredo, and Rodríguez, Rodolfo. "Finite element analysis of sloshing and hydroelastic vibrations under gravity." ESAIM: Mathematical Modelling and Numerical Analysis 33.2 (2010): 305-327. <http://eudml.org/doc/197598>.

@article{Bermúdez2010,
abstract = { This paper deals with a finite element method to solve fluid-structure interaction problems. More precisely it concerns the numerical computation of harmonic hydroelastic vibrations under gravity. It is based on a displacement formulation for both the fluid and the solid. Gravity effects are included on the free surface of the fluid as well as on the liquid-solid interface. The pressure of the fluid is used as a variable for the theoretical analysis leading to a well posed mixed linear eigenvalue problem. Lowest order triangular Raviart-Thomas elements are used for the fluid and classical piecewise linear elements for the solid. Transmission conditions at the fluid-solid interface are taken into account in a weak sense yielding a non conforming discretization. The method does not present spurious or circulation modes for nonzero frequencies. Convergence is proved and optimal error estimates are given. Finally, numerical results are shown. },
author = {Bermúdez, Alfredo, Rodríguez, Rodolfo},
journal = {ESAIM: Mathematical Modelling and Numerical Analysis},
keywords = {Fluid-structure; finite elements; hydroelasticity under gravity; vibrations; spectral problems; spurious modes.; gravity effects; spurious modes; finite element method; fluid-structure interaction problems; harmonic hydroelastic vibrations; displacement formulation; well-posed mixed linear eigenvalue problem; triangular Raviart-Thomas elements; piecewise linear elements; fluid-solid interface; non-conforming discretization; convergence; optimal error estimates},
language = {eng},
month = {3},
number = {2},
pages = {305-327},
publisher = {EDP Sciences},
title = {Finite element analysis of sloshing and hydroelastic vibrations under gravity},
url = {http://eudml.org/doc/197598},
volume = {33},
year = {2010},
}

TY - JOUR
AU - Bermúdez, Alfredo
AU - Rodríguez, Rodolfo
TI - Finite element analysis of sloshing and hydroelastic vibrations under gravity
JO - ESAIM: Mathematical Modelling and Numerical Analysis
DA - 2010/3//
PB - EDP Sciences
VL - 33
IS - 2
SP - 305
EP - 327
AB - This paper deals with a finite element method to solve fluid-structure interaction problems. More precisely it concerns the numerical computation of harmonic hydroelastic vibrations under gravity. It is based on a displacement formulation for both the fluid and the solid. Gravity effects are included on the free surface of the fluid as well as on the liquid-solid interface. The pressure of the fluid is used as a variable for the theoretical analysis leading to a well posed mixed linear eigenvalue problem. Lowest order triangular Raviart-Thomas elements are used for the fluid and classical piecewise linear elements for the solid. Transmission conditions at the fluid-solid interface are taken into account in a weak sense yielding a non conforming discretization. The method does not present spurious or circulation modes for nonzero frequencies. Convergence is proved and optimal error estimates are given. Finally, numerical results are shown.
LA - eng
KW - Fluid-structure; finite elements; hydroelasticity under gravity; vibrations; spectral problems; spurious modes.; gravity effects; spurious modes; finite element method; fluid-structure interaction problems; harmonic hydroelastic vibrations; displacement formulation; well-posed mixed linear eigenvalue problem; triangular Raviart-Thomas elements; piecewise linear elements; fluid-solid interface; non-conforming discretization; convergence; optimal error estimates
UR - http://eudml.org/doc/197598
ER -

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