Enhancement of Sound Absorber by Multiarea Helmholtz Resonators Array Based on Fibonacci Sequence

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SAFFAR S.

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF MECHANICAL ENGINEERING TRANSACTIONS OF THE ISME Year:2021 | Volume:22 | Issue:1 Page(s): 54-73

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Information Journal Paper

Title

Enhancement of Sound Absorber by Multiarea Helmholtz Resonators Array Based on Fibonacci Sequence

Author(s)

SAFFAR S. | Issue Writer Certificate

Keywords

Fibonacci based Helmholtz resonator array (Fibonacci based-HRA)

sound absorption coefficient

broad-band low frequency noise control

finite element method (FEM)

Abstract

This paper try to show that cling to the physical order that governs nature can be helpful in engineering application such as acoustical materials. In this regards, an innovative idea to the noise control problem for broader absorption bandwidth at low frequencies is presented in this paper. For this aim, Helmholtz resonator array (HRA) designed based on Fibonacci sequence, which is addressed “, Fibonacci based-HRA”, . First, to validate the simulations which were performed through finite element method (FEM) as a numerical method in COMSOL Multi-physics software (Version 5. 2), the results have been compared with experimental results which obtained by other researchers for two cases: (1) one unit resonator, and (2) four resonators array block with equal size. Second, to examine the performance of sound absorption of Fibonacci based-HRA, the results obtained for HRA with equal sizes of the 4, 6, 8 and 10 component resonators, compared with those obtained for Fibonacci based-HRA with the same number of the component resonators and the same overall dimensions of HRA block. The comparison showed that Fibonacci based-HRA approach is a good candidate for broad-band low frequency noise control.

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APA: Copy

SAFFAR, S.. (2021). Enhancement of Sound Absorber by Multiarea Helmholtz Resonators Array Based on Fibonacci Sequence. IRANIAN JOURNAL OF MECHANICAL ENGINEERING TRANSACTIONS OF THE ISME, 22(1), 54-73. SID. https://sid.ir/paper/1035351/en

Vancouver: Copy

SAFFAR S.. Enhancement of Sound Absorber by Multiarea Helmholtz Resonators Array Based on Fibonacci Sequence. IRANIAN JOURNAL OF MECHANICAL ENGINEERING TRANSACTIONS OF THE ISME[Internet]. 2021;22(1):54-73. Available from: https://sid.ir/paper/1035351/en

IEEE: Copy

S. SAFFAR, “Enhancement of Sound Absorber by Multiarea Helmholtz Resonators Array Based on Fibonacci Sequence,” IRANIAN JOURNAL OF MECHANICAL ENGINEERING TRANSACTIONS OF THE ISME, vol. 22, no. 1, pp. 54–73, 2021, [Online]. Available: https://sid.ir/paper/1035351/en

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