Influence of wind speed,stay cable inclination angle and wind yaw angle on formation of rivulets |
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| Authors: | Jihong Bi Ji Wu Jian Guan Jian Wang |
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| Institution: | 1.School of Civil Engineering,Tianjin University,Tianjin,China;2.Key Laboratory of Coast Civil Structure Safety of Ministry of Education,Tianjin,China;3.School of Civil Engineering,Tianjin Chengjian University,Tianjin,China;4.Key Laboratory of Soft Soil Characteristic and Engineering Environment of Tianjin,Tianjin,China;5.Tianjin Key Laboratory of Civil Structure Protection and Reinforcement,Tianjin,China |
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| Abstract: | 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. |
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