摘要
Combining lubrication theory and CFD technology, a finite element model is established to simulate the rain-wind-induced vibration(RWIV). Based on Spalart-Allmaras(S-A)turbulence type, COMSOL software is adopted to calculate the wind pressure coefficient and wind friction coefficient that vary with the location and time. To verify the veracity and rationality of this method, the formation and evolution of rivulets at different wind speeds are studied and compared with the existing experimental results. Furthermore, the time, location, height and width of the initial formation of rivulets are analyzed at different wind speeds, cable inclination angles and wind yaw angles. The results show that the three influencing factors mentioned above have great effect on the formation of rivulet, and the influencing tendency, range and degree are different from each other.
Combining lubrication theory and CFD technology, a finite element model is established to simulate therain-wind-induced vibration （RWIV）. Based on Spalart-Allmaras（S-A）turbulence type, COMSOL software isadopted to calculate the wind pressure coefficient and wind friction coefficient that vary with the location and time.To verify the veracity and rationality of this method, the formation and evolution of rivulets at different windspeeds are studied and compared with the existing experimental results. Furthermore, the time, location, height andwidth of the initial formation of rivulets are analyzed at different wind speeds, cable inclination angles and windyaw angles. The results show that the three influencing factors mentioned above have great effect on the formationof rivulet, and the influencing tendency, range and degree are different from each other.
基金
Supported by the National Natural Science Foundation of China(No.51408399)
关键词
天津大学学报
英文版
rain-wind-induced vibration
rivulet
wind speed
wind yaw angle
cable inclination angle
