Abstract
Purpose of the present is to investigate the food configuration at a tunnel entrance for reducing the micro pressure wave that is generated according to train speed. Two configurations were examined for tunnel of 0.5 km length. The experimental results show that a slit cover hood installed at the entrance of the tunnel reduces the maximum micro pressure wave by 41.2%, and a configuration with a slit cover hood installed at the entrance and a 45slanted portal at the exit of the tunnel suppresses it by 47.7%.
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More From: Transactions of The Korean Society of Mechanical Engineers B
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