Bulk viscosity of water in acoustic modal analysis and experiment
Loading...
Date
2018-06-04
Authors
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
EDP Sciences
Altmetrics
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.
Description
Keywords
Citation
EPJ Web of Conferences. 2018, vol. 180, issue 2018, p. 1-6.
https://www.epj-conferences.org/articles/epjconf/abs/2018/15/epjconf_efm2018_02049/epjconf_efm2018_02049.html
https://www.epj-conferences.org/articles/epjconf/abs/2018/15/epjconf_efm2018_02049/epjconf_efm2018_02049.html
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en