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首页> 外文会议>Vehicle aerodynamics, 2012. >The Aerodynamic Development of the Tesla Model S - Part 2: Wheel Design Optimization
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The Aerodynamic Development of the Tesla Model S - Part 2: Wheel Design Optimization

机译：Tesla Model S的空气动力学开发-第2部分：车轮设计优化

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Aerodynamic efficiency plays an increasingly important role in the automotive industry, as the push for increased fuel economy becomes a larger factor in the engineering and design process. Longitudinal drag is used as the primary measure of aerodynamic performance, usually cited as the coefficient of drag (C_D). This drag is created mostly by the body shape of the vehicle, but the wheel and tire system also contributes a significant portion. In addition to the longitudinal drag created by the body and wheels, rotational drag can add an appreciable amount of aerodynamic resistance to the vehicle as well. Reducing power consumption is an especially vital aspect in electric vehicle (EV) design. As the world's first luxury electric sedan, the Tesla Model S combines a premium driving experience with an electric drivetrain package that allows for unique solutions to many vehicle subsystems. The Model S has been developed from its inception with a focus on minimizing aerodynamic drag from all components. To that end, a wheel that reduces aerodynamic power loss was investigated. Exa's PowerFLOW CFD simulation software helped to expedite the design cycle, from force and moment values to qualitative flow visualization. PowerFLOW's proven Lattice-Boltzman solver and inherent transient nature provide accurate results and unique insight into the aerodynamic characteristics of each design not produced by other CFD solvers. The sliding mesh capability was also included to more closely represent the actual physics at work around the wheel. Ultimately, a new wheel was developed which greatly reduces aerodynamic power consumption.
机译：空气动力学效率在汽车工业中扮演着越来越重要的角色，因为提高燃油经济性的要求已成为工程和设计过程中的更大因素。纵向阻力被用作空气动力学性能的主要量度，通常被称为阻力系数（C_D）。这种阻力主要由车辆的车身形状产生，但车轮和轮胎系统也占很大比例。除了由车身和车轮产生的纵向阻力外，旋转阻力还可为车辆增加相当数量的空气动力学阻力。降低功耗是电动汽车（EV）设计中特别重要的方面。作为全球首款豪华电动轿车，特斯拉Model S将卓越的驾驶体验与电动动力总成套件结合在一起，从而为许多车辆子系统提供了独特的解决方案。 Model S从一开始就被开发出来，其重点是使所有组件的空气阻力最小。为此，研究了一种减少空气动力损失的车轮。 Exa的PowerFLOW CFD仿真软件有助于加快设计周期，从力和力矩值到定性流动可视化。 PowerFLOW久经考验的Lattice-Boltzman求解器和固有的瞬态特性可为其他CFD求解器未提供的每个设计的空气动力学特性提供准确的结果和独特的见解。还包括滑动网格功能，以更紧密地表示围绕车轮工作的实际物理过程。最终，开发了一种新的车轮，该车轮大大降低了空气动力消耗。

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