セッションID: SS3-1-5
会議情報
主催: 一般社団法人 日本機械学会
会議名: 第30回交通･物流部門大会
開催日: 2021/12/01 - 2021/12/03
マイクロホンアレイを用いた切取区間における低周波圧力変動の測定・評価
詳細
主催: 一般社団法人 日本機械学会
会議名: 第30回交通･物流部門大会
開催日: 2021/12/01 - 2021/12/03
It is known that a pressure fluctuation with frequencies of several hertz to 100 Hz are generated from a passing Shinkansen train vehicle. Past studies showed that this aerodynamic pressure fluctuation is caused by bogie cavities and gaps between vehicles. To evaluate the pressure fluctuation, we have utilized a linear microphone array for field measurement. The microphone array consists of ultra-low frequency microphones arranged in line along the rail. In this paper, the effect of the microphone arrangement of the linear microphone array on measured results of the pressure fluctuation was investigated in cutting section.
