Acoustic wave diffraction at the upper edge of a two-dimensional periodic array of finite rigid cylinders. A comprehensive design model of periodicity-based devices

Castiñeira-Ibáñez, Sergio; Rubio, Constanza; Sánchez‐Pérez, J. V.

doi:10.1209/0295-5075/101/64002

Cited by 10 publications

(20 citation statements)

References 34 publications

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“…However, this solution appears more like an improvement of a standard barrier rather than an improvement of a sonic crystal barrier because it does not solve the issues for which they were created: reducing the visual impact on receivers and allowing air flow through it. Table 1 summarizes the design and IL obtained in the best settings of the studies analyzed, excluding those using a very tiny scale, such as [72][73][74][75][76][77][78][79].…”

Section: Discussionmentioning

confidence: 99%

Recent Developments in Sonic Crystals as Barriers for Road Traffic Noise Mitigation

2019

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Noise barriers are the most widespread solution to mitigate noise produced by the continuous growth of vehicular traffic, thus reducing the large number of people exposed to it and avoiding unpleasant effects on health. However, conventional noise barriers present the well-known issues related to the diffraction at the edges which reduces the net insertion loss, to the reflection of sound energy in the opposite direction, and to the complaints of citizens due to the reduction of field of view, natural light, and air flow. In order to avoid these shortcomings and maximize noise abatement, recent research has moved toward the development of sonic crystals as noise barriers. A previous review found in the literature was focused on the theoretical aspects of the propagation of sound through crystals. The present work on the other hand reviews the latest studies concerning the practical application of sonic crystal as noise barriers, especially for road traffic noise mitigation. The paper explores and compares the latest developments reported in the scientific literature, focused on integrating Bragg’s law properties with other mitigation effects such as hollow scatterers, wooden or recycled materials, or porous coating. These solutions could increase the insertion loss and frequency band gap, while inserting the noise mitigation action in a green and circular economy. The pros and cons of sonic crystal barriers will also be discussed, with the aim of finding the best solution that is actually viable, as well as stimulating future research on the aspects requiring improvement.

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Section: Discussionmentioning

confidence: 99%

Recent Developments in Sonic Crystals as Barriers for Road Traffic Noise Mitigation

2019

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“…These models should consider all the acoustic phenomena related to the particular SCAS that is being designed, which means that the supposition of the real 3D case should be taken into account. In this sense, an overlapping model [17] developed using the Finite Elements Method (FEM) to design real SCAS has recently been presented.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…These systems are widely used in research due to several reasons such as their simplicity, their size or the high amount of symmetry of the cylinders [8,17].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Finally, the resulting total complex acoustic pressure of the three dimensional case can be calculated by combining the partial complex pressures obtained at each one of the two dimensional cases. A complete explanation of the model is presented in reference [17]. To develop the model and to obtain the numerical predictions, the commercial software COMSOL Multiphysics has been used throughout the study.…”

Section: Numerical Overlapping Design Modelmentioning

confidence: 99%

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Environmental noise control during its transmission phase to protect buildings. Design model for acoustic barriers based on arrays of isolated scatterers

Castiñeira-Ibáñez

Rubio

Sánchez‐Pérez

2015

Building and Environment

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ElsevierCastiñeira Ibáñez, S.; Rubio Michavila, C.; Sánchez Pérez, JV. (2015). Environmental noise control during its transmission phase to protect buildings. Design model for acoustic barriers based on arrays of isolated scatterers. Building and Environment. 93:179-185. doi:10.1016/j.buildenv.2015 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 1 ENVIRONMENTAL NOISE CONTROL DURING ITS TRANSMISSION PHASE TO PROTECT BUILDINGS. DESIGN MODEL FOR ACOUSTIC BARRIERS BASED ON ARRAYS OF ISOLATED SCATTERERS.Sergio Castiñeira-Ibañez, Constanza Rubio*, Juan Vicente Sánchez-Pérez ABSTRACTA new generation of acoustic barriers is being introduced into the noise control market. These barriers, based on arrays of isolated scatterers, present interesting properties to be used in cities to reduce the transmitted transport noise affecting buildings. Among them, both aesthetic and continuity factors of the urban landscape may be mentioned. This new kind of barrier is technologically advanced and acoustically competitive with respect to the current ones formed by continuous rigid materials. To design these barriers whilst taking into account their inherent acoustic complexity, we present an overlapping numerical model here that enables us to split the real three-dimensional problem into two two-dimensional ones, allowing both the reduction of the computational cost and the separate analysis of each one of the noise control mechanisms involved. We analyse different cases, checking the numerical simulations with accurate experimental results.

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“…The advantage of sonic crystal acoustic barriers when compared with conventional ones, apart from the fact that it is frequency tunable, is that the action of wind is relatively small as it is an open structure [11]. Acoustic barriers based on sonic crystals are still a research topic of high interest [12][13][14][15][16], and mainly their study is based on noise transmission due to the fact that they are not continous devices. Nowadays acoustic barriers based on sonic cystals are used to reduce road traffic noise [17].…”

Section: Introductionmentioning

confidence: 99%

Subwavelength slit acoustic metamaterial barrier

Candelas¹,

Belmar²,

Gomez-Lozano³

et al. 2015

J. Phys. D: Appl. Phys.

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IOP PublishingRubio Michavila, C.; Candelas Valiente, P.; Belmar Ibáñez, F.; Gómez Lozano, V.; Uris Martínez, A. (2015). ABSTRACTReduction of noise in the transmission path is a very important environmental problem. The most usual method to reduce this noise level is the use of acoustic barriers. In this paper, an acoustic metamaterial based on sound transmission through subwavelength slits, is tailored to be used as an acoustic barrier is shown. This system consists of two rows of periodic repetition of vertical rigid pickets separated by a slit of subwavelength width, embedded in air. Here, both the experimental and the numerical analyses are presented. These analyses have facilitated the identification of the parameters that affect the insertion loss performance. The results demonstrated that the proposed barrier can be tuned to mitigate a band noise in mechanical plant for buildings where openings for air flow are required as well as industrial noise, without excessive barrier thickness.2

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Acoustic wave diffraction at the upper edge of a two-dimensional periodic array of finite rigid cylinders. A comprehensive design model of periodicity-based devices

Cited by 10 publications

References 34 publications

Recent Developments in Sonic Crystals as Barriers for Road Traffic Noise Mitigation

Recent Developments in Sonic Crystals as Barriers for Road Traffic Noise Mitigation

Environmental noise control during its transmission phase to protect buildings. Design model for acoustic barriers based on arrays of isolated scatterers

Subwavelength slit acoustic metamaterial barrier

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