Detail publikace

Dynamics of pressure pulsations in thin annular gap

KŮREČKA, J. HIMR, D. HABÁN, V.

Anglický název

Dynamics of pressure pulsations in thin annular gap

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

en

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova anglicky

dynamics; pressure pulsations; seal gap

Vydáno

15.06.2021

Nakladatel

IOP Publishing

ISSN

1755-1315

Kniha

Proceedings of 30TH IAHR SYMPOSIUM ON HYDRAULIC MACHINERY AND SYSTEMS

Ročník

774

Číslo

1

Strany od–do

012145–012145

Počet stran

11

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",
  volume="774",
  number="1",
  month="June",
  pages="012145--012145",
  publisher="IOP Publishing",
  issn="1755-1315"
}