The Proceedings of the Symposium on Environmental Engineering
Online ISSN : 2424-2969
2016.26
Session ID : 131
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Experimental Study on Low-frequency Aeroacoustic Sound Using Launch Facility for Train Model
(2nd Report, Experiments of Train Model with Bogie)
Fumio MIZUSHIMAYusuke WAKABAYASHITakeshi KURITAKeiichiro IWANAGATetsuya DOI
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Abstract

It is known that bogie cavities of Shinkansen trains are major aeroacoustic sound sources of low-frequency noise, which is difficult to insulate with noise barrier. In this paper, an experimental facility that can launch a train model at high velocities is used to investigate the low-frequency noise sources. 1/33.1 scale train model with 6 bogies (4-car train model) are used .The comparative study of flat, bogie cavities and bogies with side covers shows that bogie cavities generate low-frequency aeroacoustic sound, and full-height side covers reduce that sound effectively, compared with half-height side covers .

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© 2016 The Japan Society of Mechanical Engineers
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