横风对受电弓各杆件气动特性的影响研究

建立受电弓-接触网-列车模型,通过雷诺时均方法研究了横风对受电弓各杆件气动特性的影响.通过改变横风风速、风向角,分析了受电弓的流线、表面压力和涡量等分布,探讨了受电弓各部件阻力系数、升力系数和侧向力系数,对比了各部件与受电弓总作用力系数的关系.研究表明:对于受电弓的滑板、上臂杆及下臂杆部分,其阻力、侧向力系数均随风向角...

Influence Analysis of Cross Wind on the Aerodynamic Characteristics of Pantograph Members

The pantograph-contact net-train model was established,and the influence of cross wind on the aerodynamic characteristics of the pantograph members was studied by the Reynolds time-average method.By changing the cross wind speed and wind direction angle,the dis?tribution of the flow line,surface pressure and vorticity of the pantograph are analyzed.The drag coefficient,lift coefficient and lateral force coefficient of the components of the pantograph are discussed.The relationship between the total force coefficient of the electric bow.The re?search shows that for the skateboard,upper arm and lower arm of the pantograph,the resistance and lateral force coefficients show a trend of increasing with the increase of wind direction angle and crosswind wind speed;The lower arm has the least resistance;the upper and lower arms have a negative lift coefficient,and the force is opposite to the pantograph.In each of the rods,the aerodynamic force of the skateboard accounts for the largest share of the total aerodynamic force.The upper members of the pantograph are affected by the cross wind and wind di?rection angles.The results have important significance and value for the research and application of the aerodynamic characteristics of the members of the pantograph.