What question did this study set out to answer?

This research aims to investigate the mechanisms causing low-frequency and aerodynamic noise from Shinkansen trains and explore effective countermeasures.

June 3, 2026Quarterly Report of RTRI0 citationsOpen Access

Countermeasures of Low-frequency and Aerodynamic Noise Emitted from Shinkansen Trains

MAMariko AkutsuRailway Technical Research Institute TUToki UDARailway Technical Research Institute

Key Points

This research aims to investigate the mechanisms causing low-frequency and aerodynamic noise from Shinkansen trains and explore effective countermeasures.
Conducted field tests to assess noise levels from running Shinkansen trains.
Performed low-noise wind tunnel tests to simulate and analyze noise generation mechanisms.
Developed a wind tunnel test method to evaluate potential noise countermeasures.
Identified the primary sources of low-frequency and audible noise emissions from the bogie sections.
Demonstrated effective countermeasures that significantly reduce aerodynamic noise during high-speed operations.

Abstract

When Shinkansen vehicles run in open sections at high-speed, bogie sections emit low-frequency noise and audible noise. For Shinkansen trains to be able to run at higher speeds, it is essential to reduce this aerodynamic noise. To understand the mechanisms generating low-frequency and audible noises, we conducted both field tests and low-noise wind tunnel tests. This paper describes a wind tunnel test method and investigates countermeasures against low-frequency and audible noises.

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