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"
}