Publication detail
Dynamics of pressure pulsations in thin annular gap
KŮREČKA, J. HIMR, D. HABÁN, V.
Original Title
Dynamics of pressure pulsations in thin annular gap
Type
conference paper
Language
English
Original Abstract
Fluid pulsations can significantly influence behavior of bearings or sealing parts of hydraulic machines and therefore their operation. In this contribution, an analytical approach to solve pressure pulsations dynamics is compared with a computational solution using acoustic simulation in ANSYS Mechanical FEM package. Studied problem is simplified to an annular gap and the pressure pulsations are excited either from one annulus end or excitation is made by a movement of an inner cylindrical surface perpendicularly to its axis. Excitation on an annulus surface can have angle dependent phase. This geometry allows a linearization of governing equations and so the equations are solvable analytically. Compressibility was incorporated to analytical and computational approach so the eigen frequencies for both methods were evaluated and compared. Also the added fluid effects were studied and evaluated.
Keywords
dynamics; pressure pulsations; seal gap
Authors
KŮREČKA, J.; HIMR, D.; HABÁN, V.
Released
15. 6. 2021
Publisher
IOP Publishing
ISBN
1755-1315
Periodical
IOP Conference Series: Earth and Environmental Science
Year of study
774
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
012145
Pages to
012145
Pages count
11
URL
Full text in the Digital Library
BibTex
@inproceedings{BUT172066,
author="Jan {Kůrečka} and Daniel {Himr} and Vladimír {Habán}",
title="Dynamics of pressure pulsations in thin annular gap",
booktitle="Proceedings of 30TH IAHR SYMPOSIUM ON HYDRAULIC MACHINERY AND SYSTEMS",
year="2021",
journal="IOP Conference Series: Earth and Environmental Science",
volume="774",
number="1",
pages="012145--012145",
publisher="IOP Publishing",
doi="10.1088/1755-1315/774/1/012145",
issn="1755-1315",
url="https://iopscience.iop.org/article/10.1088/1755-1315/774/1/012145"
}