The attenuation of sound by turbulence in internal flows
2013 (English)In: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 133, no 6, 3764-3776 p.Article in journal (Refereed) Published
The attenuation of sound waves due to interaction with low Mach number turbulent boundary layers in internal flows (channel or pipe flow) is examined. Dynamic equations for the turbulent Reynolds stress on the sound wave are derived, and the analytical solution to the equation provides a frequency dependent eddy viscosity model. This model is used to predict the attenuation of sound propagating in fully developed turbulent pipe flow. The predictions are shown to compare well with the experimental data. The proposed dynamic equation shows that the turbulence behaves like a viscoelastic fluid in the interaction process, and that the ratio of turbulent relaxation time near the wall and the sound wave period is the parameter that controls the characteristics of the attenuation induced by the turbulent flow.
Place, publisher, year, edition, pages
USA: Acoustical Society of America (ASA), 2013. Vol. 133, no 6, 3764-3776 p.
acoustic wave absorption, acoustic wave propagation, boundary layer turbulence, channel flow, Mach number, non-Newtonian fluids, pipe flow, viscosity
Fluid Mechanics and Acoustics
Research subject Järnvägsgruppen - Ljud och vibrationer
IdentifiersURN: urn:nbn:se:kth:diva-123752DOI: 10.1121/1.4802894ISI: 000320173600020ScopusID: 2-s2.0-84878911063OAI: oai:DiVA.org:kth-123752DiVA: diva2:629738
FunderSwedish Research Council, SDA 26211
QC 201309272013-06-172013-06-172015-05-26Bibliographically approved