著者

井門 敦志 小濱 泰昭

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 B編 (ISSN:03875016)

巻号頁・発行日

vol.71, no.703, pp.817-824, 2005-03-25 (Released:2011-03-03)

参考文献数

8

被引用文献数

4 4

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As a train runs at higher speeds, the aerodynamic drag increases. On long train-sets such as those of Shinkansen, the aerodynamic drag is mainly generated by intermediate vehicles. In previous researches, we proved that smoothing the under-floor surface reduces the aerodynamic drag. To investigate the mechanism of this effect, we performed wind tunnel tests with train models consisted of three vehicles, each representing a head, intermediate and tail vehicle, and measured the aerodynamic drag and pressure distributions on the intermediate vehicle. We divided the aerodynamic drag of the intermediate vehicle into the components at different parts of the carbody and clarified the effect of smoothing the under-floor surface to decrease the aerodynamic drag.

著者

井門 敦志

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 B編 (ISSN:03875016)

巻号頁・発行日

vol.69, no.685, pp.2037-2043, 2003-09-25 (Released:2008-03-28)

参考文献数

8

被引用文献数

1 1

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In our previous researches, we estimated the reduced quantity of aerodynamic drag of trains by smoothing under-floor construction. However, we did not compare the results of wind tunnel tests with those of on-track tests, or verify the accuracy of wind tunnel tests for the aerodynamic drag of trains. In this research, we estimated the aerodynamic drag of a train-set by wind tunnel tests. Regarding the reduced quantity of the aerodynamic drag of trains, we compared the results of wind tunnel tests with those of on-track tests. These test results show that the reduced quantity of the aerodynamic drag of trains by wind tunnel tests approximately agrees with that by on-track tests.