Detail publikace
Druhá viskozita vody v akustické modální analýze a v experimentu
KŮREČKA, J. HABÁN, V. HIMR, D.
Český název
Druhá viskozita vody v akustické modální analýze a v experimentu
Anglický název
Bulk viscosity of water in acoustic modal analysis and experiment
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
Bulk viscosity is an important factor in the damping properties of fluid systems and exhibits frequency dependent behaviour. A comparison between modal analysis in ANSYS Acoustics, custom code and experimental data is presented in this paper. The measured system consists of closed ended water-filled steel pipes of different lengths. The influence of a pipe wall, flanges on both ends and longitudinal waves in the structural part were included in measurement evaluation. Therefore, the obtained values of sound speed and bulk viscosity are parameters of the fluid. A numerical simulation was carried out only using fluid volume in a range of bulk viscosity. Damping characteristics in this range were compared to measured values. The results show a significant influence of sound speed and subsequently, the use of sound speed value regressed from experimental data yields a better fit between the measurement and the computation.
Anglický abstrakt
Bulk viscosity is an important factor in the damping properties of fluid systems and exhibits frequency dependent behaviour. A comparison between modal analysis in ANSYS Acoustics, custom code and experimental data is presented in this paper. The measured system consists of closed ended water-filled steel pipes of different lengths. The influence of a pipe wall, flanges on both ends and longitudinal waves in the structural part were included in measurement evaluation. Therefore, the obtained values of sound speed and bulk viscosity are parameters of the fluid. A numerical simulation was carried out only using fluid volume in a range of bulk viscosity. Damping characteristics in this range were compared to measured values. The results show a significant influence of sound speed and subsequently, the use of sound speed value regressed from experimental data yields a better fit between the measurement and the computation.
Klíčová slova anglicky
bulk viscosity, fluid acoustics
Vydáno
04.06.2018
Nakladatel
EDP Sciences
ISSN
2100-014X
Kniha
EPJ Web of Conferences
Ročník
180
Číslo
2018
Strany od–do
1–6
Počet stran
6
BIBTEX
@inproceedings{BUT150102,
author="Jan {Kůrečka} and Vladimír {Habán} and Daniel {Himr},
title="Bulk viscosity of water in acoustic modal analysis and experiment",
booktitle="EPJ Web of Conferences",
year="2018",
volume="180",
number="2018",
month="June",
pages="1--6",
publisher="EDP Sciences",
issn="2100-014X"
}