Publication detail
COMPUTATIONAL MODELLING OF ADDITIONAL EFFECTS DURING FLUID FILM INTERACTION WITH STRUCTURES
MALENOVSKÝ, E. POCHYLÝ, F.
Czech title
COMPUTATIONAL MODELLING OF ADDITIONAL EFFECTS DURING FLUID FILM INTERACTION WITH STRUCTURES
English title
COMPUTATIONAL MODELLING OF ADDITIONAL EFFECTS DURING FLUID FILM INTERACTION WITH STRUCTURES
Type
conference paper
Language
en
Original abstract
This contribution is focused on the interaction of a rigid body with a thin fluid layer. Some technical applications are for example: long and short, cavitating or noncavitating journal bearings. The governing equations for this analysis are the Navier Stokes (NS) eq., and the continuity and boundary conditions. The theoretical basis of a new approach to the analysis of dynamic behavior of nonstationary motion in time and frequency domains is presented. This totally new approach is based on separating the shaft and liquid layer from each other. It is possible to establish, using this separation, a database of additional effects of fluid film for a given one shaft parameter, which can be the shaft center position. The Bézier body is used for approximating the geometrical configuration as well as the velocities and pressures. The method of control volumes is used for the solution. Curvilinear co-ordinates are used for describing the geometrical configuration and perpendicular co-ordinates are used for solving velocities and pressures.
Czech abstract
V příspěvku je uveden teoretický přístup k analýze a přístup k výpočtovému modelování dynamických vlastností tenkých tekutinových vrstev. Je uvedeno porovnání řešení dle dvou přístupů. První přístup vychází z transformace, která má tvar konvolutorního integrálu. Pokud je tekutina stlačitelná, má tento přístup značné omezení. V takovém případě musí být pro separování pohybu tělesa a tekutiny použita jiná transformace. V tomto případě nemá transformace tvar konvolutorního integrálu. Ze závislostí komplexní dynamické síly na frekvenci buzení lze stanovit tenzory přídavných účinků
English abstract
This contribution is focused on the interaction of a rigid body with a thin fluid layer. Some technical applications are for example: long and short, cavitating or noncavitating journal bearings. The governing equations for this analysis are the Navier Stokes (NS) eq., and the continuity and boundary conditions. The theoretical basis of a new approach to the analysis of dynamic behavior of nonstationary motion in time and frequency domains is presented. This totally new approach is based on separating the shaft and liquid layer from each other. It is possible to establish, using this separation, a database of additional effects of fluid film for a given one shaft parameter, which can be the shaft center position. The Bézier body is used for approximating the geometrical configuration as well as the velocities and pressures. The method of control volumes is used for the solution. Curvilinear co-ordinates are used for describing the geometrical configuration and perpendicular co-ordinates are used for solving velocities and pressures.
Keywords in Czech
Navier Stokes eq. computational modelling, fluid film interaction
Keywords in English
Navier Stokes eq. computational modelling, fluid film interaction
RIV year
2004
Released
01.07.2004
Location
Paris
ISBN
1-86058-447-0
Book
Proceedings of the 8th international conference on flow-induced vibration
Edition number
1
Pages count
10
BIBTEX
@inproceedings{BUT12169,
author="Eduard {Malenovský} and František {Pochylý},
title="COMPUTATIONAL MODELLING OF ADDITIONAL EFFECTS DURING FLUID FILM INTERACTION WITH STRUCTURES",
booktitle="Proceedings of the 8th international conference on flow-induced vibration",
year="2004",
month="July",
address="Paris",
isbn="1-86058-447-0"
}