Veerababu, D and Sachin, C and Subhashini, PVS and Venkatesham, B (2023) Acoustic Modeling and Analysis of Automotive Air-Filters. In: International Journal of Acoustics and Vibrations, 28 (4). pp. 353-361.
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Abstract
Air filters are placed upstream of internal combustion engines to remove dust particles in the suction air. In this article, we examine the acoustic characterization of an air-filtering unit in the absence of mean flow. For this purpose, a circular air-filtering unit with an axial inlet and side outlet widely used in the automobile industry is considered. The air-filter element is modeled as an equivalent acoustic fluid with finite flow resistivity. The flow resistivity of the region is estimated from the permeability of the filter paper and the geometrical arrangement of the paper folds (pleats) inside the air-filter element using an electrical analogy. A numerical model based on the finite element method (FEM) and an analytical model using classical one-dimensional plane wave analysis (1-D PWA) was developed. Experiments were carried out using an impedance tube to estimate transmission loss. A good correlation is observed between the FEM model and the experiments. The results obtained from the 1-D PWA are in reasonable agreement with those obtained from the other two methods. © 2023 International Institute of Acoustics and Vibrations. All rights reserved.
| Item Type: | Journal Article |
|---|---|
| Publication: | International Journal of Acoustics and Vibrations |
| Publisher: | International Institute of Acoustics and Vibrations |
| Additional Information: | The copyright for this article belongs to Author. |
| Keywords: | Acoustic impedance; Air; Air filters; Automotive industry, Acoustic analysis; Acoustic characterization; Acoustics model; Automotives; Dust particle; Filter elements; Flow resistivity; Mean flow; Modelling and analysis; Remove dusts, Numerical methods |
| Department/Centre: | Division of Electrical Sciences > Electrical Communication Engineering |
| Date Deposited: | 01 Mar 2024 10:07 |
| Last Modified: | 01 Mar 2024 10:07 |
| URI: | https://eprints.iisc.ac.in/id/eprint/84037 |
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