高速列車における空力制御 : 流体工学,流体機械

概要

論文の詳細を見る
Speeding up of a high speed train has been trued by means of reducing its weight, streamlining its shape, and decreasing its frontal project area. But the reduction of weight decreases the adhesion force of driving wheels to rails. So, too much reduction in weight causes slipping of the driving wheels, and the maximum speed of the train is limited to some extent. In this research we try to use the aerodynamic down-force, which is utilized widely for a racing car, to compensate the decrease in the frictional force between the driving wheels and the ground surface caused by reducing the car weight. Wind tunnel test with using a head-coach model is performed. The wind tunnel is provided with a moving-belt equipment. The down force is created In the space between the bottom surfaces of bogies and the moving belt, and is controlled by changing the shapes of the bottom surface of bogies. Lift and drag of the model, as well as velocity distributions under the model, are measured.
2001-04-25