Journal ArticleDOI
Noise reduction using a quarter wave tube with different orifice geometries
Carl Q. Howard,Richard A. Craig +1 more
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TLDR
In this paper, the side-branch geometries of an adaptive quarter-wave tube with a bell-mouth geometry were compared to those with a sharp edge, a backward inclined branch, and a bell mouth.About:
This article is published in Applied Acoustics.The article was published on 2014-02-01. It has received 23 citations till now. The article focuses on the topics: Body orifice & Bell mouth.read more
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Book
Acoustic Analyses Using Matlab® and Ansys®
TL;DR: This book presents a meta-history of web exceptionalism from 1989 to 2002, a period chosen in order to explore its roots as well as specific cases up to and including the year in which descriptions of “Web 2.0” began to circulate.
Journal ArticleDOI
Targeted sound attenuation capacity of 3D printed noise cancelling waveguides
TL;DR: In this paper, the authors explored the creation of 3D printed sound cancelling waveguides that can be customised for selected frequencies as a function of geometry, and the potential for attenuation in these waveguide is characterised through experimentally measured acoustic-absorption ( α ) and transmission loss (TL).
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Acoustic absorption of passive destructive interference cavities
TL;DR: In this paper, a methodology to design free-form geometries that can create targeted acoustic absorption is presented, and the effectiveness of this methodology is then experimentally validated while quantifying the influence of length, diameter and geometry orientation.
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Study of multi-chamber micro-perforated muffler with adjustable transmission loss
TL;DR: In this article, a multi-chamber micro-perforated muffler with adjustable transmission loss is proposed for silencing the blower used on fuel cell vehicles, which attenuates the low-medium frequency wide band noise and the narrow band harmonics simultaneously.
References
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Journal ArticleDOI
Review—Self-Sustaining Oscillations of Flow Past Cavities
Donald Rockwell,E. Naudascher +1 more
Journal ArticleDOI
Acoustic Nonlinearity of an Orifice
Uno Ingard,Hartmut Ising +1 more
TL;DR: In this article, the phase relationship between the fundamental harmonic components of pressure and velocity has been investigated by measuring simultaneously the oscillatory flow velocity in the orifice and the acoustic pressure fluctuations producing the flow.
Book
Engineering Noise Control
TL;DR: In this article, the authors present a comprehensive and authoritative student textbook that covers the fundamentals of acoustics, theoretical concepts and practical application of current noise control technology, which can be used to solve real world problems encountered by noise and vibration consultants as well as the more straightforward ones handled by engineers and occupational hygienists in industry.
Journal ArticleDOI
Self-sustained oscillations in a closed side branch system
TL;DR: In this paper, a simple analytical model is proposed for the prediction of the pulsation amplitudes in two-dimensional inviscid and compressible flows, based on Nelson's representation of the shear layer as a row of discrete vortices.
Related Papers (5)
An adaptive quarter-wave tube that uses the sliding-Goertzel algorithm for estimation of phase
Carl Q. Howard,Richard A. Craig +1 more