列队行驶工况下的油罐车气动阻力研究  

The Study on Aerodynamics Drag of Platooning Oil Tanker Trucks

作　　者：李明达[1,2] 隗海林[1] 门玉琢[2] 包翠竹[1] LI Mingda;KUI Hailin;MEN Yuzhuo;BAO Cuizhu(College of Transportation,Jilin University,Changchun 130022,Jilin,China;School of Mechatronics Engineering,Changchun Institute of Technology-,Changchun 130012,Jilin,China)

机构地区：[1]吉林大学交通学院,吉林长春130022 [2]长春工程学院机电工程学院,吉林长春130012

出　　处：《华南理工大学学报（自然科学版）》2018年第4期29-34,43,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51378075)~~

摘　　要：为研究列队行驶车辆的气动阻力影响,通过基于格子玻尔兹曼方法(LBM)的计算流体动力学软件XFlow,对2辆油罐车列队行驶进行空气动力学分析.首先,建立了与实车外形一致的1∶10油罐车模型,保留了结构的复杂性;进行了格子尺度优化试验,对模型表面速度场、湍流强度分布以及各部件对油罐车空气阻力的影响进行了研究;完成了不同行驶间距下与变道过程中的计算流体动力学(CFD)仿真,得到了车辆的气动阻力变化规律;最后,对列队行驶车辆进行了燃油经济性分析.结果表明:列队行驶技术是油罐车节能减排的有效途径,2辆油罐车在30 m/s的速度下列队行驶时,可节省燃油10.69%.For the study on the influence of air drag on the platooning vehicles, the aerodynamic analysis about 2 platooning oil tanker trucks is can＇ied out by using the computational fluid dynamics software XFlow based on the lattice Bohzmann method （LBM）. Firstly, the 1：10 model of oil tanker truck is established, which is consistent with the shape of the real oil tanker truck, and the complexity of structure is preserved. The lattice scale optimiza- tion test is carried out, and the surface velocity field, turbulence intensity distribution and the effect of each compo- nent on the air drag on oil tanker truck are studied. The Computational Fluid Dynamics （CFD） simulation in dif- ferent driving distances and lane-changing conditions is completed, and the change law of the aerodynamic drag on the platooning tanker trucks is obtained. Finally, the fuel economy of each vehicle is analyzed. The result shows that the platooning technique is an effective way on the fuel-saving and emission-reduction for oil tanker truck. The 2 platooning oil tanker trucks can save fuel 10.69% when the speed is at 30 m/s.

关 键 词：列队行驶 格子玻尔兹曼方法 空气动力学分析 无网格技术 

分 类 号：U461.8[机械工程—车辆工程]