Publication detail

A computational investigation of vibration of stationary and rotating structures submerged in a liquid

ZAPOMĚL, J. ČERMÁK, L. POCHYLÝ, F.

Czech title

Numerické modelování vibrací stacionárních a rotujících struktur ponořených do kapaliny

English title

A computational investigation of vibration of stationary and rotating structures submerged in a liquid

Type

journal article - other

Language

en

Original abstract

The article is devoted to the numerical modelling of the structure-fluid interaction of a solid body submerged in a fluid. It is supposed that the submerged body is absolutely rigid and that the pressure distribution in the liquid can be described by the Laplace euquation in 2D domain.The space discretization in the liquid is carried out in two ways. The first approach is based on the finite element method in the physical domain with a moving boundary (between body and liquid). The second method transforms the physical domain with moving boundary to the fixed reference domain and the transformed Laplace problem is then solved by the finite difference method. The time discretization is realized by the backward Euler method. The applicability of both approaches is verified by numerical tests.

Czech abstract

Článek je věnován numerickému modelování vzájemného působení kapaliny a do ní ponořeného tělesa. Předpokládá se, že těleso je absolutně tuhé a že rozložení tlaku v tekutině lze popsat Laplaceovou rovnicíve 2D. Prostorová diskretizace v kapalině je provedena dvěma způsoby. První přístup používá metodu konečných prvků na reálné oblasti s pohyblivou hranicí . Druhá metoda transformuje pohyblivou oblast na pevnou referenční oblast a transformovanou Laplaceovu rovnici pak řeší diferenční metodou. Diskretizace v čase je v obou případech realizována implicitní Eulerovou metodou. Použitelnost obou postupů je doložena vyřešenými příklady.

English abstract

The article is devoted to the numerical modelling of the structure-fluid interaction of a solid body submerged in a fluid. It is supposed that the submerged body is absolutely rigid and that the pressure distribution in the liquid can be described by the Laplace euquation in 2D domain.The space discretization in the liquid is carried out in two ways. The first approach is based on the finite element method in the physical domain with a moving boundary (between body and liquid). The second method transforms the physical domain with moving boundary to the fixed reference domain and the transformed Laplace problem is then solved by the finite difference method. The time discretization is realized by the backward Euler method. The applicability of both approaches is verified by numerical tests.

Keywords in Czech

ponořené struktury, vibrace, numerické modelování

Keywords in English

submerged structures, vibration, computational investigation

RIV year

2008

Released

01.12.2008

Location

University of West Bohemia

ISSN

1802-680X

Journal

Applied andComputational Mechanics

Number

2

Pages from–to

177–186

Pages count

12

BIBTEX


@article{BUT48796,
  author="Jaroslav {Zapoměl} and Libor {Čermák} and František {Pochylý},
  title="A computational investigation of vibration of stationary and rotating structures submerged in a liquid",
  journal="Applied andComputational Mechanics",
  year="2008",
  number="2",
  month="December",
  pages="177--186",
  address="University of West Bohemia",
  issn="1802-680X"
}