103 物体表面への多孔質材適用による空力音低減手法 : 第1報空力音と空気力の測定結果(2)(OS1-1 流れの抵抗低減,OS1 流れの抵抗抵減,オーガナイズドセッション)

概要

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Reduction of the noise along a high-speed railway line is very important for further speed-up of a high-speed train. We have developed the technique of aerodynamic noise reduction by porous material and are trying to apply this technique to an actual pantograph. However the details of the mechanism of aerodynamic noise reduction was not clear. To clarify that mechanism, aerodynamic noise, aerodynamic force and flow field around a test cylinder with or without porous materials (porous urethane, porous metal, fur material) was measured by the wind tunnel test. In this report, experimental results of the wind tunnel test about aerodynamic noise and aerodynamic force are shown.
一般社団法人日本機械学会の論文
2007-11-17