摘要
针对煤炭物流业的运输特点,利用基于格子玻尔兹曼方法(LBM)的空气动力学软件XFlow进行运煤卡车的气动阻力研究。首先,建立了1∶10比例的3轴运煤卡车模型,根据车辆模型尺寸确定了虚拟风洞尺寸;然后,通过格子无关性试验确定了车辆模型的空气动力学参数与车辆模型的空气阻力系数;最后,根据模型表面速度场与湍流强度的分布情况,分析了货厢密闭性与各部件对整车气动特性的影响。仿真结果显示:车辆模型的气动阻力系数为0.724;空载工况下,货厢裸露会增加整车7.5%的空气阻力。
According to the transport characteristic of coal logistics industry,this paper studies the aerodynamic characteristic on the coal truck by using the CFD software XFlow based on the Lattice Boltzmann Method(LBM).Firstly,the 1∶10 scale 3-axles coal truck model has been established,and the size of the virtual wind tunnel is determined according to the size of vehicle model.Then,the aerodynamic parameters of the CFD analysis and the air drag coefficient of the model are determined by Lattice Independence Test.Finally,according to the distribution of surface velocity field and turbulence intensity of the model,the airtightness of the cargo compartment and the influence of various components on the aerodynamic characteristics of the vehicle are analyzed.The simulation results show that:the aerodynamic resistance coefficient of the model is 0.724,and the air drag will increase by 7.5% under the condition of open-cargo-box.
出处
《长春工程学院学报（自然科学版）》
2018年第2期26-28,42,共4页
Journal of Changchun Institute of Technology：Natural Sciences Edition
