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A Study on the Effect of Mud-flap on the Cabin Noise in KTX  

Choi, Seong-Hun (한국철도기술연구원, 고속철도기술개발사업단)
Chung, In-Soo (한국철도공사, 고속차량개발팀)
Seo, Sung-Il (한국철도기술연구원, 기존철도기술개발사업단)
Publication Information
Journal of the Korean Society for Railway / v.9, no.5, 2006 , pp. 550-554 More about this Journal
Abstract
In the early stage of operation of KTX, passengers complained of the excessive cabin noise as the passes the tunnel. The noise is caused partly by wheel-rail contact and partly by airflow around the carbody. In this study, to reduce the cabin noise, the effect of the mud-flaps located between the cars is investigated. A series of tests was conducted to clarify the influences of the type and length of mud-flap, and train speed on the cabin noise. The optimum length of mud-flap was found. The shedding vortices around the mud-flap is thought to be the cause of the aerodynamic noise. Strouhal number and the resonant shedding frequency around the mud-flap correlated well with the cabin noise level.
Keywords
aerodynamic noise; cabin; high speed train; mud-flap; tunnel; Strouhal number; vortex shedding;
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1 최성훈, 김재철, 이찬우, 조준호 (2004), '터널주행시의 고속전철의 실내 소음', 한국철도학회 04 춘계학술대회 논문집, pp.670-674
2 서용권, 문종춘 (1993), '보텍스 쉐딩에 의한 얕은 직사각형통 내에서의 유동특성', 대한기계학회논문집, 제17권, 제8호, pp.2112-2130
3 정영종, 조상현, 상신형, 최해천 (1998), '층류유동에서 사각실린더 주위의 와류쉐딩과 공진현상에 관한 수치적 연구', 대한기계학회논문집 B권, 제22권, 제5호, pp.573-583
4 이찬우, 김재철 (2005), '터널 구조에 따른 KTX 고속차량 차내 소음특성', 한국정밀공학회 05 춘계학술대회 논문집, pp.341-344
5 허대녕, 유승필, 이덕주, 이두용 (2001), '직사각형 공동의 소음제어에 대한 수치적 연구', 한국소음진동공학회 2001년도 추계학술발표대회논문집, pp.1189-1196