Venturi Tubes: Acoustic Attenuation With Flow Loss Considerations

[+] Author and Article Information
A. Selamet

Department of Mechanical Engineering, The Ohio State University, Columbus, Ohio, 43210

N. S. Dickey

Department of Mechanical Engineering and Applied Mechanics, The University of Michigan, Ann Arbor, Michigan 48109

Y. Kim

The Korean institute of Science and Technology

J. M. Novak

Powertrain Operations, Ford Motor Company, Dearborn, Michigan 48121

J. Vib. Acoust 120(2), 607-613 (Apr 01, 1998) (7 pages) doi:10.1115/1.2893870 History: Received September 01, 1995; Revised November 01, 1996; Online February 26, 2008


The acoustic wave attenuation performance of Venturi tubes with zero mean fluid flow is investigated by: (1) combining analytical solutions for one-dimensional wave propagation in conical reducers, diffusers, and straight ducts; (2) employing a computational time-domain technique; and (3) conducting experiments in an extended impedance tube setup with four fabricated Venturi tubes and matching contraction chambers. The results from both analytical and computational approaches compare well with each other and the experimental data. The numerical technique is also applied to address the effects of a compressible mean flow on the acoustic behavior. Finally, the flow performance of the fabricated Venturi tubes is measured and the trade-offs are discussed between flow efficiency and acoustic performance.

Copyright © 1998 by The American Society of Mechanical Engineers
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