Abstract
Aerodynamic noise is a major source of wayside noise generated by high-speed railway vehicles, and thus it is important to reduce this phenomenon. For this purpose, a new aerodynamic noise reduction method that involves covering the surface of objects with particular porous materials has been developed. To verify its aerodynamic noise reduction effects, wind tunnel tests using cylinders and high-speed pantographs were conducted. Field tests using the high-speed pantograph were also conducted. The results indicated that aerodynamic noise generated from the cylinders and the high-speed pantographs was reduced by the application of porous materials, thus confirming the effectiveness of this method. An advantage of this method is that it is possible to reduce aerodynamic noise with little modification of object shape. Furthermore, separate wind tunnel tests also demonstrated the effectiveness of the method in reducing aerodynamic noise in combination with simplifying the shape to allow easier material processing.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
