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Acoustic measurement of additive manufactured concentric tube reverse flow resonators

Akiwate, Deepak; D. Date, Mahendra; Venkatesham, B.; Suryakumar, S.

Authors

Mahendra D. Date

B. Venkatesham

S. Suryakumar



Abstract

This study investigates acoustic properties of additive manufactured (AM) concentric tube reverse flow (RF) resonators where acoustic attenuation with smaller sample length is achieved by increasing effective travel length of acoustic waves within a structure. The theoretical modeling based on narrow tube theory has been proposed to predict absorption coefficient, while numerical estimation of absorption coefficient is carried out using finite element method (FEM). The predicted theoretical and numerical results are found to be in good agreement with measured results in impedance tube, thus demonstrating its potential in achieving low frequency attenuation with compact size structures.

Journal Article Type Article
Online Publication Date Dec 24, 2018
Publication Date Jan 2, 2019
Deposit Date Feb 5, 2025
Journal Mechanics of Advanced Materials and Structures
Print ISSN 1537-6494
Electronic ISSN 1537-6532
Publisher Taylor and Francis
Peer Reviewed Peer Reviewed
Volume 26
Issue 1
DOI https://doi.org/10.1080/15376494.2018.1534163