Hybrid noise control using multiple Helmholtz resonator arrays
Sign Up to like & getrecommendations! Published in 2019 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2018.08.023
Abstract: Abstract Helmholtz resonator (HR) is one of the most basic acoustic models and is generally used to reduce low-frequency noise. However, it is only effective at its single resonance peak with narrow frequency band. In… read more here.
Keywords: hybrid noise; system; noise control; helmholtz resonator ... See more keywords
Line with attached segment as a model of Helmholtz resonator: Resonant states completeness
Sign Up to like & getrecommendations! Published in 2017 at "Journal of King Saud University - Science"
DOI: 10.1016/j.jksus.2016.07.004
Abstract: Abstract Quantum graph consisting of a line with attached segment is considered as a simple model of the Helmholtz resonator. Completeness of resonant states in the space of square integrable functions on the segment is… read more here.
Keywords: attached segment; line attached; segment; model helmholtz ... See more keywords
Effect of geometrical parameters and use of porous material in a Helmholtz resonator on suppression of thermo-acoustic instabilities
Sign Up to like & getrecommendations! Published in 2023 at "International Journal of Spray and Combustion Dynamics"
DOI: 10.1177/17568277231158900
Abstract: Thermo-acoustic instabilities are mainly formed due to in-phase superposition of non-uniform heat release and pressure variation in the combustors of gas turbines, rocket engines and other acoustically confined spaces. These instabilities not only damage the… read more here.
Keywords: neck; thermo acoustic; acoustic instabilities; material ... See more keywords
Helmholtz-resonator quartz-enhanced photoacoustic spectroscopy.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.481457
Abstract: In this work, Helmholtz-resonator quartz-enhanced photoacoustic spectroscopy (HR-QEPAS) was developed for trace gas sensing. A pair of Helmholtz resonators with high-order resonance frequency was designed and coupled with a quartz tuning fork (QTF). Detailed theoretical… read more here.
Keywords: spectroscopy; helmholtz; resonator quartz; quartz enhanced ... See more keywords
Analysis of the Photoacoustic Helmholtz Resonator with Conical-Ended Duct
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Electronics and Telecommunications"
DOI: 10.1515/eletel-2017-0016
Abstract: Q-factor of photoacoustic Helmholtz cells can be improved by modification of the duct ends. The paper describes how mechanical modification of the duct ends affects the photoacoustic Helmholtz resonator. The cone profile of the duct… read more here.
Keywords: modification; helmholtz resonator; duct; photoacoustic helmholtz ... See more keywords
Embedded Rough-Neck Helmholtz Resonator Low-Frequency Acoustic Attenuator
Sign Up to like & getrecommendations! Published in 2024 at "Crystals"
DOI: 10.3390/cryst15010012
Abstract: In various practical noise control scenarios, such as duct noise mitigation, industrial machinery, architectural acoustics, and underwater applications, it is essential to develop noise absorbers that deliver effective low-frequency attenuation while maintaining compact dimensions. To… read more here.
Keywords: embedded rough; neck; helmholtz resonator; low frequency ... See more keywords
Effects of Aperture Shape on Absorption Property of Acoustic Metamaterial of Parallel-Connection Helmholtz Resonator
Sign Up to like & getrecommendations! Published in 2023 at "Materials"
DOI: 10.3390/ma16041597
Abstract: A Helmholtz resonator (HR) with an embedded aperture is an effective acoustic metamaterial for noise reduction in the low-frequency range. Its sound absorption property is significantly affected by the aperture shape. Sound absorption properties of… read more here.
Keywords: aperture shape; helmholtz resonator; absorption; absorption property ... See more keywords