Noise Reduction in Ducts using Helmholtz Resonators

Authors

  • Sourabh Dogra IIT mandi
  • Arpan Gupta IIT mandi
  • Umberto Berardi Ryerson University Canada

Abstract

Ducts are common components of contemporary construction. They have been extensively employed in building ventilation systems. The movement of the air produces an imperceptible harmful noise. People working in workplaces are often subjected to this noise. Large exposure of noise leads to long term effect on the human health. We have designed system based on the helmholtz resonators for controlling these types of noise. Helmholtz resonator can absorb the sound of the desired frequency by properly designing its geometry. We have used different Helmholtz resonators in the combination of the serial and parallel arrangements. The system is analysed numerically in COMSOL and validated by a theoretical model. The theoretical and numerical  results both are in good agreement . The proposed model provides a significant amount of transmission loss. There is broadband low frequency attenuation due to combine effect of the Bragg reflection and Helmholtz resonance. These types of the model are very useful where the space is not a constrain.

Author Biographies

Sourabh Dogra, IIT mandi

School of Engineering

Arpan Gupta, IIT mandi

School of Engineering

Umberto Berardi, Ryerson University Canada

Department of Architectural Science

Additional Files

Published

2021-08-17

How to Cite

1.
Dogra S, Gupta A, Berardi U. Noise Reduction in Ducts using Helmholtz Resonators. Canadian Acoustics [Internet]. 2021 Aug. 17 [cited 2024 Apr. 27];49(3):12-3. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3890

Issue

Vol. 49 No. 3 (2021)

Section

Proceedings of the Acoustics Week in Canada

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