Sound Propagation in a Duct with Wall Corrugations Having Square-Wave Profiles
Author
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-07-09
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Acoustic wave propagation in ducts with rigid walls having square-wave wall corrugations is considered in the context of a perturbation formulation.
Using the ratio of wall corrugation amplitude to the mean duct half width, a small parameter is defined and a two levels of approximations are obtained.
The first-order solution produces an analytical description of the pressure field inside the duct.
The second-order solution yields an analytical estimate of the phase speed of waves transmitting through the duct.
The effect of wall corrugation density on acoustic impedance and wave speeds is highlighted.
The analysis reveals that waves propagating in a duct with square-wave wall corrugation are slower than waves propagating in a duct with sinusoidal wave corrugation having the same corrugation wavelength.
American Psychological Association (APA)
Hawwa, Muhammad A.. 2015. Sound Propagation in a Duct with Wall Corrugations Having Square-Wave Profiles. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1074029
Modern Language Association (MLA)
Hawwa, Muhammad A.. Sound Propagation in a Duct with Wall Corrugations Having Square-Wave Profiles. Mathematical Problems in Engineering No. 2015 (2015), pp.1-8.
https://search.emarefa.net/detail/BIM-1074029
American Medical Association (AMA)
Hawwa, Muhammad A.. Sound Propagation in a Duct with Wall Corrugations Having Square-Wave Profiles. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1074029
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1074029