限界约束下高铁升力翼气动布局研究  

Research on aerodynamic layout of lift wings on a high-speed train under boundary constraint

作　　者：严日华 高超[1] 武斌[1] 刘亚[1] 丁绍成 倪章松[2] 薛明 YAN Rihua;GAO Chao;WU Bin;LIU Ya;DING Shaocheng;NI Zhangsong;XUE Ming(National Key Laboratory of Science and Technology on Aerodynamic Design and Research,Northwestern Polytechnical University,Xi’an 710072,China;China Aerodynamics Research and Development Center,Mianyang 621000,China)

机构地区：[1]西北工业大学翼型叶栅空气动力学重点实验室,西安710072 [2]中国空气动力研究与发展中心,绵阳621000

出　　处：《空气动力学学报》2022年第6期138-145,共8页Acta Aerodynamica Sinica

基　　金：国家重点研发计划(2020YFA0710901)。

摘　　要：气动升力协同高速列车是一种通过布置串列升力翼提高列车气动升力、实现高速列车整体节能和降低列车全寿命周期成本的创新型高速列车概念。在高铁限界约束下,串列升力翼布局受壁面干扰及翼间流动影响显著。通过数值计算方法研究了升力翼壁面效应及翼间干扰影响规律,在此基础上提出了一种较优的六翼布局方式。研究表明:随着升力翼距壁面高度的增加,机翼受到的壁面效应逐渐减弱,壁面高度大于机翼一倍弦长时,壁面效应对升力翼的影响将消失。双翼布局下翼间距和翼间高度差对该布局的气动性能影响较大,随着翼间距及翼间高度差的增加,前翼对后翼升力系数产生的影响逐渐减小。六翼布局下,同一高度布放方式提供的升力最大,此时平均升力系数为1.118 4,平均阻力系数为0.21,总升力为单节车厢总重量的26.66%。The aerodynamic lift cooperative high-speed train is an innovative concept by arranging tandem lift wings on the train body,such that it can improve the aerodynamic lift of the train,achieve the overall energy saving of the train operation and reduce the train’s life cycle cost.Under the constraint of high-speed rail,the layout of tandem lifting wings is significantly affected by the wall interference and wing-wing interactions.In this study,numerical simulations are conducted to understand these two effects,and an optimal six-wing layout is proposed.The results show that as the wall-normal height of the lift wing increases,the wall effect on the wing gradually weakens.When the wall-normal height is greater than twice the chord length of the wing,the wall effect on the lift wing disappears.The wing spacing and wall-normal height difference of the double-wing layout can have great impacts on the aerodynamic performance of the wings.As the wing spacing and wall-normal height difference increase,the influence of the front wing on the lift coefficient of the rear wing gradually decreases.For the six-wing layout,the largest lift is generated when the wings are located at the same wall-normal height.Under this configuration,the averaged lift coefficient is 1.118 4,the averaged drag coefficient is0.21,and the total lift accounts for 26.66% of the weight of a single train carriage.

关 键 词：高速列车 升力翼 翼间干扰 壁面效应 气动布局 

分 类 号：V217.2[航空宇航科学与技术—航空宇航推进理论与工程] U292.914[交通运输工程—交通运输规划与管理]