Title
Simulating complex noise barrier reflections
Author
van der Eerden, F.J.M.
Lutgendorf, D.
de Roo, F.
Publication year
2011
Abstract
Within the EU FP7 QUIESST project, QUIeting the Environment for a Sustainable Surface Transport, a test method is being developed for the reflectivity of noise barriers. The method needs to account for a complex shape of barriers and the use of various types of absorbing materials. The performance of a barrier is to be measured in the near field, whereas the far field effects will be used to define an appropriate indicator for the rating of the noise barrier reflecting characteristics. In this QUIESST work package, numerical simulations in the time domain as well as the frequency domain have been used and are compared. This paper presents a method to relate the near field and far field simulations. At the moment near field simulations are used whereas near field measurements will be used in the future. Validation of the method is foreseen by means of measurements in the near and far field. Further, an engineering computation method will be developed as well as an indicator for rating the reflectivity of noise barriers.
Subject
Physics & Electronics
AS - Acoustics & Sonar
TS - Technical Sciences
Acoustics and Audiology
Industrial Innovation
Noise barriers
Outdoor propagation
Numerical modeling
To reference this document use:
http://resolver.tudelft.nl/uuid:eff48dc2-39ad-4be3-af23-45068a996740
TNO identifier
462254
Publisher
The Institute of Noise Control Engineering of the USA, Washington, D.C.
Source
40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011, 4-7 September 2011, Osaka, Japan
Document type
conference paper