Noise control for a dipole sound source using micro-perforated panel housing integrated with a Herschel–Quincke tube

Wang, Z.B.; Chiang, Yan Kei; Choy, Yat Sze; Wang, C.Q.; Xi, Q.

doi:10.1016/j.apacoust.2018.12.016

Cited by 15 publications

(6 citation statements)

References 15 publications

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“…The experimental setup and methodology utilized here will be described in this section. The transmission loss is measured for various passive damping devices such as a Helmholtz resonator (HR), Herschel-Quincke (HQ) tube [8,9], expansion chamber (EC), and a quarter wave resonator (QWR) [10] under no-flow conditions. A schematic of the formerly mentioned damping devices are illustrated in Figure 1.…”

Section: Experimental Setup and Methodologymentioning

confidence: 99%

Effect of Incident Acoustic Pressure Amplitude on the Transmission Loss of Helmholtz Resonators

et al. 2020

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Acoustic transmission loss is a common parameter utilized throughout several studies to evaluate the acoustic characteristics of a given test element. Transmission loss has been frequently referred to as a source independent parameter. However, this work presents evidence that the incident acoustic pressure amplitude does, in fact, have an effect on the measured transmission loss for some passive damping devices. The transmission loss was experimentally measured utilizing the two-source location method and the specimens tested include an expansion chamber, a quarter wave resonator, a Herschel-Quincke tube and various Helmholtz resonators. When varying the power supplied to the acoustic source, it was noted that all the devices exhibited nearly constant values of transmission loss, with the exception of the Helmholtz resonators. The Helmholtz resonators had a significant variance of transmission loss with respect to the acoustic source power. This decrease in performance is caused by the "jet-flow" phenomenon occurring at the Helmholtz resonator neck, which results in increased acoustic losses. The present work illustrates that the assumption of source independence, which is often made when using transmission loss to evaluate damping devices, must be taken with caution, as this assumption is case dependent and may be crucial when scaling experimental studies to an industrial setting.

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Section: Experimental Setup and Methodologymentioning

confidence: 99%

Effect of Incident Acoustic Pressure Amplitude on the Transmission Loss of Helmholtz Resonators

et al. 2020

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“…So, the optimal design for the HQ tube would be maximizing TL value and at the same time minimizing its backpressure or BP. This rather simple principle of wave cancellation has been used in several configurations of the present-day automotive mufflers that combine the advantage of wideband TL with remarkably low backpressure [3,8,19].…”

Section: Herschel-quincke Tube With Two Ductsmentioning

confidence: 99%

“…Accordingly, the complex plane can be used to find an optimal solution that provides the highest transmission loss [6]. Wang et al developed A twodimensional theoretical model to suppress sound radiation from an axial-flow fan [8]. T Their results showed that the HQ segment enhances sound reduction performance.…”

Section: Introductionmentioning

confidence: 99%

Analytical and numerical modeling, sensitivity analysis, and multi-objective optimization of the acoustic performance of the herschel-quincke tube

et al. 2021

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“…8,9 Second, the sense of pleasure is also affected by the type and level of noise, which is determined by the pulsating parameters of the flow field. Similarly, noise reduction optimization [10][11][12] of typical components such as AD and sudden expansion and contraction was carried out by theoretical, experimental or numerical simulation methods, 13,14 which greatly reduced the sound pressure and proved the synergistic relationship between the pressure field and the sound field. 15 Several studies have demonstrated that the perforated plate can be used to reduce the turbulence intensity and achieve the control and noise elimination of the broadband noise of the pipeline.…”

Section: Introductionmentioning

confidence: 99%

Improvement of airflow uniformity and noise reduction with optimized V-shape configuration of perforated plate in the air distributor

Liu,

Sun,

Cui

et al. 2023

Indoor and Built Environment

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The air distributor is the end component of the ventilation system, and its performance directly determines the comfortable and pleasant feeling of the residence. A perforated plate can be added to the air distributor to convert dynamic pressure into static pressure first and then distribute the air flow, which provides better self-adjustment compared with the embedded guide vane structure. However, the perforated plate can lead to a contradiction between head loss, noise and distribution uniformity. To reconcile this problem, a novel V-shape configuration of the perforated plate was put forward in this study. The internal flow and aeroacoustic properties of different types of perforated plates were systematically studied, and a full-scale test platform was built to verify the flow characteristics. The effects of hole size and installation position of the perforated plate on the uniform distribution of air flow were analyzed by the parametric analysis method. Then, the sound pressure level of the optimized perforated plate air distributor was further analyzed. The results show that, with the optimized perforated plate structure, the uniform flow performance was improved by about 30% and the overall sound pressure level was reduced by up to 12 dB.

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Noise control for a dipole sound source using micro-perforated panel housing integrated with a Herschel–Quincke tube

Cited by 15 publications

References 15 publications

Effect of Incident Acoustic Pressure Amplitude on the Transmission Loss of Helmholtz Resonators

Effect of Incident Acoustic Pressure Amplitude on the Transmission Loss of Helmholtz Resonators

Analytical and numerical modeling, sensitivity analysis, and multi-objective optimization of the acoustic performance of the herschel-quincke tube

Improvement of airflow uniformity and noise reduction with optimized V-shape configuration of perforated plate in the air distributor

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