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Communication Dans Un Congrès Année : 2010

Micrometeorological effects on urban sound propagation : A numerical and experimental study

Résumé

The present work is in line with the EM2PAU project whose aim is to quantify the influence of micrometeorological effects on sound propagation in a street canyon. This study is carried out both numerically and experimentally. Experimental data are issued from a long-term in situ experimental campaign. A 1/2 street scale model is installed in a quiet outdoor environment in order to control noise emission. Different values of street width (Ws) will be considered in this project. The first studies are conducted with the value Ws=Hs = 0:7, Hs being the street height, which corresponds to a typical aspect ratio in most European cities. The turbulent flows and temperature fields in the street are recorded by using 9 sonic anemometers and 48 thermocouples. Moreover, reference meteorological parameters are recorded from two 10-m meteorological towers, located around the site. Simultaneously, acoustic measurements are carried out along the main propagation axis of the street, across the central cross-section and outside the street. A few acoustic results from preliminary measurements are presented and discussed.
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Dates et versions

hal-00636931 , version 1 (28-10-2011)

Identifiants

  • HAL Id : hal-00636931 , version 1

Citer

Gwenaël Guillaume, Christophe Ayrault, M. Berengier, I. Calmet, V. Gary, et al.. Micrometeorological effects on urban sound propagation : A numerical and experimental study. 10th Urban Environnement Symposium Urban Futures for a Sustainable World, Jun 2010, France. 10p. ⟨hal-00636931⟩
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