한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2007년도 춘계학술대회 논문집
- /
- Pages.85-90
- /
- 2007
한국형고속열차의 외부 발생 소음특성 규명을 위한 시험
Experimental examination of noise generation from exterior of the HSR-350x
- 발행 : 2007.05.17
초록
Aerodynamically generated noise is significant when the train speed exceeds 250km/h. Experiments were performed in order to investigate the characteristics of aerodynamic noise sources generated from exterior of the HSR-350x, especially from the inter-coach spacing. Measurements of both the inside and outside of the cabin are carried out to investigate the characteristics of the noise. Effect of the size of the gap has been investigated through an wind tunnel test and it has been found that the low frequency noise is strongly dependent on the size of gap. Also performed is an array measurement to locate different noise sources from the high-speed train. Spectral characteristics of exterior noise sources have been examined through these experiments.
키워드