On the approximation of total absorption of the street open ceiling at low frequencies

Pelat, Adrien; Lihoreau, Bertrand

doi:10.1016/j.apacoust.2012.02.006

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…Similar to the studies on sound insulation properties, researches on the effect of building façade on street canyon noise can also be divided into numerical studies 96 –120 and experimental studies. 121 –125…”

Section: Studies On Street Canyon Noisementioning

confidence: 99%

A critical review of acoustic modeling and research on building façade

Zayed

2021

Building Acoustics

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Noise pollution has been impacting negatively on living comfort and working environment for a long time. Acoustic treatment on building façade is one of the effective means to tackle this issue. Numerous articles were published over the past decades to address the acoustic related problems of building façade. However, a systematic review of the research development on façade acoustic technology is lacking. Therefore, this paper examines the published research articles from seven selected journals, in terms of the annual number of articles, citation counts, co-authorships, research locations, and keywords. The analyses show that interest in façade acoustics increased during the last two decades. Researchers from Europe and areas with a high density of tall buildings made significant contributions to this development. Based on keyword analysis, articles are categorized into three groups. These include sound insulation studies, studies on the effect of façade on street noise, and noise reduction techniques. The surveyed research topics comprise numerical modeling, experimental studies, ISO standard development, and analyses on annoyance level. Potential future directions are presented based on a summary of the limitations of the existing research. This paper offers researchers and engineers an in-depth understanding of the state-of-the-art of the current façade acoustic research. Additionally, potential future directions are identified based on the findings and limitations of the previous studies.

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Section: Studies On Street Canyon Noisementioning

confidence: 99%

A critical review of acoustic modeling and research on building façade

Zayed

2021

Building Acoustics

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“…To this end, we used the modal-FE method, which proved efficient in accurately modeling 3D acoustic fields in urban areas. 11,16,17 The paper is organized as follows. Section II shows the geometry of the problem.…”

Section: Introductionmentioning

confidence: 99%

Low frequency acoustic resonances in urban courtyards

Molerón

Félix

Pagneux

et al. 2014

The Journal of the Acoustical Society of America

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Urban courtyards can be regarded as open cavities in the urban area, in which resonances can be excited by waves generated in the neighboring streets. The aim of the present work is to experimentally and numerically investigate low frequency resonance phenomena in these configurations. Experiments are carried out in a scale model and a numerical study is performed with a coupled modal-finite elements method. The method enables the three-dimensional modeling of the acoustic field and thus to take into account the interactions between the courtyard and the street canyon that occur above the roof level, a particular characteristic of wave propagation in urban areas. The attention is focused on two aspects, the amplification of the sound level inside the courtyard and the acoustic attenuation in the street due to resonances. Experimental and numerical results are in good agreement and show a strong resonant behavior of these configurations.

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“…Recently, a three-dimensional (3D) parabolic equation (narrow-angle) has been developed to study the propagation in a street with flat buildings facades. 21 This method was compared with the Modal-FE (Ref. 13) method to highlight the relevance of the one-way approximation for straight streets.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional parabolic equation model for low frequency sound propagation in irregular urban canyons

Doc

Lihoreau

Félix

et al. 2015

The Journal of the Acoustical Society of America

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A three-dimensional wide-angle parabolic equation (3DPE) is used to model low frequency sound propagation in irregular urban canyons at low computational cost. This one-way wave equation is solved using the Alternating Direction Implicit method. A finite difference scheme adapted to the geometry of the urban environment is then developed. Abrupt variations of the street width are treated as a single scattering problem using the Kirchhoff approximation. Numerical results are compared with experimental data obtained on a scale model of a street. Comparisons show the ability of the 3DPE model to provide reliable transmitted fields even for large irregularities.

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On the approximation of total absorption of the street open ceiling at low frequencies

Cited by 3 publications

References 16 publications

A critical review of acoustic modeling and research on building façade

A critical review of acoustic modeling and research on building façade

Low frequency acoustic resonances in urban courtyards

Three-dimensional parabolic equation model for low frequency sound propagation in irregular urban canyons

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