Publication detail
DAMPING OF THE PRESSURE PULSATIONS IN THE VANELESS SPACE OF THE PUMP TURBINE
HABÁN, V. POCHYLÝ, F. FIALOVÁ, S.
Czech title
Tlumení tlakových pulsací v mezilopatkovém prostoru čerpadlové turbíny
English title
DAMPING OF THE PRESSURE PULSATIONS IN THE VANELESS SPACE OF THE PUMP TURBINE
Type
conference paper
Language
en
Original abstract
This paper is focused on the dynamical damper research of the high frequency pressure and flow pulsations in the vaneless space of the pump tubine. This pulsations rise as a result of the interaction between the impeller and distributor. From the theory is generally known, that the dynamical damper based on the Helmholtz resonator principle is placed into the antinodes of the pressure eigen wave shape, if the standing wave is assumed. The eigen and excitated wave shapes were determined by the transfer matrix method. The one-dimensional theory and the second viscosity were assumed.
Czech abstract
Práce je zaměřena na výzkum dynamického tlumiče ke tlumení vysokofrekvenčních tlakových a průtokových pulsací v mezilopatkovém prostoru čerpadlové turbíny, vznikajících jako důsledek vzájemné interakce mezi oběžným kolem a rozvaděčem. Z teorie je známo, že dynamický tlumič, založený na principu Helmholtzova rezonátoru se v případě stojatého vlnění umísťuje do místa kmitny příslušného vlastního kmitu tlaku.Vlastní tvary kmitu byly stanoveny na základě jednorozměrné teorie uvážením druhé viskozity a metody přenosových matic.Na Obr.1 je uvedeno výpočtové schema , na kterém je modelováno oběžné kolo , spirála a přivaděč turbíny.
English abstract
This paper is focused on the dynamical damper research of the high frequency pressure and flow pulsations in the vaneless space of the pump tubine. This pulsations rise as a result of the interaction between the impeller and distributor. From the theory is generally known, that the dynamical damper based on the Helmholtz resonator principle is placed into the antinodes of the pressure eigen wave shape, if the standing wave is assumed. The eigen and excitated wave shapes were determined by the transfer matrix method. The one-dimensional theory and the second viscosity were assumed.
Keywords in Czech
tlak, tlumení, čerpadlo
Keywords in English
pressure, damping, pump,
RIV year
2008
Released
30.06.2008
Publisher
Institute of Thermomechanics, AS CR, v.v.i.
Location
Prague
ISBN
978-80-87012-12-3
Book
FIV 2008 - FLOW-INDUCED VIBRATION
Edition number
1
Pages from–to
559–562
Pages count
4
BIBTEX
@inproceedings{BUT26761,
author="Vladimír {Habán} and František {Pochylý} and Simona {Fialová},
title="DAMPING OF THE PRESSURE PULSATIONS IN THE VANELESS SPACE OF THE PUMP TURBINE",
booktitle="FIV 2008 - FLOW-INDUCED VIBRATION",
year="2008",
month="June",
pages="559--562",
publisher="Institute of Thermomechanics, AS CR, v.v.i.",
address="Prague",
isbn="978-80-87012-12-3"
}