Quarterly Report of RTRI
Online ISSN : 1880-1765
Print ISSN : 0033-9008
ISSN-L : 0033-9008
Aerodynamic Noise Reduction using Porous Materials and their Application to High-speed Pantographs
Takeshi SUEKIMitsuru IKEDATakehisa TAKAISHI
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2009 Volume 50 Issue 1 Pages 26-31


Aerodynamic noise is a major source of wayside noise generated along high-speed railway lines, making it important to reduce the phenomenon. To this end, a new aerodynamic noise reduction method that involves covering the surface of objects with a particular porous material has been developed. To verify its aerodynamic noise reduction effects, wind tunnel tests using cylinders and a high-speed pantograph were conducted, and the noise produced was measured. The results showed that the noise generated from the cylinders and the high-speed pantograph were reduced by the application of porous materials, thus confirming that the method is effective in reducing such aerodynamic noise.

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© 2009 by Railway Technical Research Institute
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