Design and simulation of Helmholtz resonator assembly used to attenuate tire acoustic cavity resonance noise

Zhao, Wei; Liu, Xiandong; Shan, Yingchun; He, Tian

doi:10.3397/in-2021-1706

Cited by 3 publications

(1 citation statement)

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“…One of the familiar examples is exhaust mufflers, which are engineered to function as an effective acoustic control system by suppressing emitted engine noise [1]. In all kinds of sound and noise sources of vehicles, in addition to manipulating topology parameters [2,3], using acoustic metamaterials [4,5], porous or absorbent materials [6,7], Helmholtz resonance [8,9], and perforated structures [10,11] are commonly used nowadays. An inlet duct of the turbocharger compressor is one of the primary sources of vehicle noise propagation [12].…”

Section: Introductionmentioning

confidence: 99%

Porous liner coated inlet duct: a novel approach to attenuate automotive turbocharger inlet flow-induced sound propagation

et al. 2023

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This paper proposes utilizing a thin porous material coating liner on the inlet duct of the turbocharger compressor in order to absorb the incident excitation and hence, broadband reduction of the flow-induced sound wave propagation. To this end, first, a sound-absorbing inlet duct model is designed based on efficient structural parameters. Then, three different types of absorptive materials are used as coating liners to analyze the impact of varying material properties on the acoustic absorption performance of the system. Meanwhile, a sensitivity analysis is carried out to evaluate the influence of coating layer thickness on the system’s flow-induced sound insulation performance. The research involves applying a finite element approach to conducting acoustic pressure and poroacoustics studies over the desired frequency range of human hearing (1-20 kHz). In this regard, sound transmission loss (TL) and sound pressure level (SPL) are investigated for the models with and without liners. The results indicate that sound-absorbing materials can be employed to significantly diminish flow-induced sound levels in the turbocharger inlet duct. According to the results, absorptive liners would considerably increase the maximum TL and lessen the sharp drop in TL that appeared in the model without liners at around 4321Hz. In addition, the average TL has increased due to the replacement of valleys with peaks. The sensitivity analyses demonstrated that denser absorptive materials and larger liner thicknesses are associated with higher TL levels and better sound attenuation response. By adding 15 mm of rock wool liner to the designed inlet duct, the average TL and root mean square of TL were increased up to 98 and 32 dB, respectively. The proposed design procedure of this study unlocks a fundamental approach that can be practically applied to many promising fields, such as aerospace and automotive engineering.

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Section: Introductionmentioning

confidence: 99%

Porous liner coated inlet duct: a novel approach to attenuate automotive turbocharger inlet flow-induced sound propagation

et al. 2023

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Design of Helmholtz resonator group in a lightweight aluminum alloy wheel for reducing tire acoustic cavity resonance noise

et al. 2022

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Sound and Light Waves in Healthy Environments

Arranz-Paraíso

Baeza-Moyano

Lezcano

2023

Advances in Religious and Cultural Studies

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Architects need the freedom to design their projects with the assurance that they will be inspiring aesthetic as well as healthy places, i.e., buildings, streets, parks, avenues, and squares that offer a complete living experience in an environment that takes into account light, sound, vibration, climate, and all those aspects that can disturb people's well-being. We know that prolonged exposure to noise can cause discomfort and sleep disorders, which affect the quality of life. This noise is not the only pollutant as there are other sound waves such as infrasound and ultrasound that are not perceptible but potentially harmful to health. Not forgetting electromagnetic waves, the light that reaches our bodies and which has regulated our lives throughout the existence of the species. The invention of electric lighting had the consequence that people spend practically all day indoors. Days are poorly illuminated, and the nights have too much light. On the other hand, the intensity of artificial light is a fraction of that of daylight and the spectral composition is also different.

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Design and simulation of Helmholtz resonator assembly used to attenuate tire acoustic cavity resonance noise

Cited by 3 publications

References 0 publications

Porous liner coated inlet duct: a novel approach to attenuate automotive turbocharger inlet flow-induced sound propagation

Porous liner coated inlet duct: a novel approach to attenuate automotive turbocharger inlet flow-induced sound propagation

Design of Helmholtz resonator group in a lightweight aluminum alloy wheel for reducing tire acoustic cavity resonance noise

Sound and Light Waves in Healthy Environments

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