Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2000.04b
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- Pages.841-846
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- 2000
Experimental study on the alleviation of micro-pressure waves radiated from the tunnel exit with the slanted portals on the high-speed train operations of 300km/h
300km/h급 고속철도의 터널 미기압파 저감을 위한 경사갱구의 실험적 연구
- Published : 2000.04.20
Abstract
The compression wave produced when a high-speed train enters a tunnel propagates along the tunnel ahead of the train. The micro pressure wave related to He compression wave is a special physics Phenomena created by high-speed train-tunnel interfaces. On this work, the method for reducing the micro pressure wave is to delay the gradient of the compression wave by using aerodynamic structures. The objective of this paper is to determine the optimum angle of the slanted portal using the moving model rig. According to the results of the present study, the maximum value of micro pressure wave is reduced by 19.2% fer the
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