Role of End-Correction in Enhancing Transmission Loss Estimates in Case of Extended Inlet-Outlet Expansion Chamber Mufflers Using Simulation

Archana Kale; Farhat Surve

doi:10.17485/IJST/v16i19.1645

Article

Role of End-Correction in Enhancing Transmission Loss Estimates in Case of Extended Inlet-Outlet Expansion Chamber Mufflers Using Simulation

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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v16i19.1645

Year: 2023, Volume: 16, Issue: 19, Pages: 1453-1460

Original Article

Role of End-Correction in Enhancing Transmission Loss Estimates in Case of Extended Inlet-Outlet Expansion Chamber Mufflers Using Simulation

Archana Kale^1*, Farhat Surve²

¹Research Scholar, Electroacoustics Research laboratory, Dept. of Physics, Nowrosjee Wadia College, Pune, 411001, Maharashtra, India
²Professor and Head, Electroacoustics Research laboratory, Dept. of Physics, Nowrosjee Wadia College, Pune, 411001, Maharashtra, India

*Corresponding Author
Email: [email protected]

Received Date:09 August 2022, Accepted Date:19 December 2022, Published Date:19 May 2023

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objectives: Measuring transmission loss of a muffler in a lab setting ideally requires an anechoic termination at one end, and hence turns out to be tedious. Simulation gives the freedom of changing the geometry of object without destructing it. Methods: Lab grade expansion chamber mufflers are remodelled into extended tube expansion chamber mufflers using simulation. Furthermore, applying end correction helps in optimizing their geometry. The same technique is extended to concentric tube resonators by varying the porosity handle. Findings: With simulation, number of parameters can be changed multiple times by keeping other handles constant. Novelty: Lab grade mufflers are to be modified with non-destructive method for getting improved performance. Hence, to check and optimise the parameters, the present dimensions of lab grade mufflers are kept constant and the results are checked using simulation technique.

Keywords: Concentric tube resonator; Endcorrection in mufflers; Extended tube expansion chamber muffler; Simulation; Transmission loss

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Copyright

© 2023 Kale & Surve. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)