Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2006.11a
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- Pages.65-68
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- 2006
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- 1598-2548(pISSN)
Wind tunnel tests for analyzing noise generation from the inter-coach spacing of a high-speed train
풍동을 이용한 고속철의 차간 공간에서의 공력 소음 측정 및 특성 분석
Abstract
Experiments were performed to investigate the effects of mud-flap width on the aeroacoustic noise generation inside high-speed trains. The open-circuit type wind tunnel was used. The measurement setup was custom-built to simulate intercoach spacing. From the measurements, the characteristics of the turbulent flow after the intercoach spacing and consequent generation of aeroacoustic noise inside the cabin was investigated. Especially the effects of mud flap length on the characteristics of the characteristics of the turbulent flow were identified. The mechanism of noise generation by analyzed interactions with structure vibration characteristics and generation characteristics of blocked pressure was investigated.