Continuous Pressure Waves Generated by a Train Running in a Tunnel

This research describes several characteristics of tunnel continuous waves (TCW), which are a kind of low-frequency pressure wave radiated from railway tunnel portals. Several theoretical results are presented and measurement data obtained in field tests. Ratios of the amplitude and the frequency of...

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Bibliographic Details
Published inJournal of Low Frequency Noise, Vibration and Active Control Vol. 28; no. 2; pp. 117 - 132
Main Authors Kikuchi, Katsuhiro, Ozawa, Satoru, Takami, Hajime, Iida, Masanobu
Format Journal Article
LanguageEnglish
Published London, England SAGE Publications 01.06.2009
Multi Science
Subjects
Acoustics
Aeroacoustics, atmospheric sound
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Separation method
Continuous wave
Low pressure
Wave train
Experimental study
Aeroacoustics
Low frequency
Railway tunnel
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Summary:This research describes several characteristics of tunnel continuous waves (TCW), which are a kind of low-frequency pressure wave radiated from railway tunnel portals. Several theoretical results are presented and measurement data obtained in field tests. Ratios of the amplitude and the frequency of the TCW radiated in the forward direction to those radiated backward have been obtained. Also described is a method for separating an incident wave from pressure data measured in a tunnel and this method is applied to data obtained in field tests. As a result, the separation method is shown to be applicable to the field test data.
ISSN:0263-0923
1461-3484
2048-4046
DOI:10.1260/0263-0923.28.2.117