Publication detail

Bulk viscosity of water in acoustic modal analysis and experiment

KŮREČKA, J. HABÁN, V. HIMR, D.

Original Title

Bulk viscosity of water in acoustic modal analysis and experiment

Type

conference paper

Language

English

Original Abstract

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.

Keywords

bulk viscosity, fluid acoustics

Authors

KŮREČKA, J.; HABÁN, V.; HIMR, D.

Released

4. 6. 2018

Publisher

EDP Sciences

ISBN

2100-014X

Periodical

EPJ Web of Conferences

Year of study

180

Number

2018

State

French Republic

Pages from

1

Pages to

6

Pages count

6

URL

https://www.epj-conferences.org/articles/epjconf/abs/2018/15/epjconf_efm2018_02049/epjconf_efm2018_02049.html

Full text in the Digital Library

http://hdl.handle.net/11012/85323

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",
  journal="EPJ Web of Conferences",
  volume="180",
  number="2018",
  pages="1--6",
  publisher="EDP Sciences",
  doi="10.1051/epjconf/201818002049",
  issn="2100-014X",
  url="https://www.epj-conferences.org/articles/epjconf/abs/2018/15/epjconf_efm2018_02049/epjconf_efm2018_02049.html"
}