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

https://iopscience.iop.org/article/10.1088/1755-1315/774/1/012145

Full text in the Digital Library

http://hdl.handle.net/11012/200964

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"
}