Distributions of Wind Velocity, Direction and Turbulence Intensity in OLE Cross-section by Wind Tunnel Testing


Takeo MORIKAWA, Sei NAGASAWA, Akira ICHIGE
Distributions of wind velocity, wind direction and turbulence intensity in OLE (Overhead-Line-Equipment) cross-section are examined using one fiftieth scaled structure models of Shinkansen by wind tunnel. The following conclusions are gained. (1) Whatever the structure may be, the distributions of velocity magnitude are affected significantly by the presence of sound barrier. At the area close to contact wire, wind blows upward in the direction at 20-30 deg. to the horizontal plane. In addition, the magnitude of velocity increases to 120-130%. (2) When the vehicle exists on the wind blowing side, the distribution of wind velocity remains as mentioned in (1). (3) On the other hand, when the vehicle exists on the opposite side to wind blowing, the wind blows horizontally with its velocity reaching 100% near the contact wire.