"The purpose of this investigation is to determine the effect of slow steady flow on the reflection and transmission characteristics of acoustic filters.
A standing wave tube and transmission tube apparatus, designed and built by a previous investigator, was modified to accept slow steady flow. Reflection characteristics were determined from measurements made on the inlet side of the filters investigated. These data along with measurements taken with the transmission tube apparatus were used to determine transmission characteristics. The calculations were simplified by terminating the filters anechoically. The filters used in this investigation were an expansion chamber, an automobile type muffler with adjustable elements, and a replacement automobile muffler. Experimentally determined characteristics of the expansion chamber were in good agreement with theoretically determined characteristics. A major conclusion of this investigation is that standing wave measurements can be made in the presence of slow steady flow. Recommendations for future investigations are made"--Abstract, page ii.
Gatley, William S.
Koval, Leslie Robert
Davis, Robert L.
Mechanical and Aerospace Engineering
M.S. in Mechanical Engineering
University of Missouri--Rolla. Mechanical Engineering Department
Ford Motor Company
University of Missouri--Rolla
viii, 89 pages
© 1972 Thomas Valle Huber, All rights reserved.
Thesis - Open Access
Sound -- Transmission -- Mathematical models
Automobiles -- Motors -- Mufflers -- Acoustic properties
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Huber, Thomas Valle, "A study of plane wave filter analysis with flow" (1972). Masters Theses. 3521.