In this era of fast-depleting natural resources, the hike in fuel prices is ever-growing. With stringent norms over environmental policies, the automotive manufacturers are on a voyage to produce efficient vehicles with lower emissions. High-speed cars are at a stake to provide uncompromised performance but having strict rules over emissions drives the companies to approach through a different route to keep the demands of performance intact. One of the most sought-after ways is to improve the aerodynamics of the vehicles. Drag force is one of the major setbacks when it comes to achieving high speeds when the vehicle is in motion. This research aims to examine the effects of different add on devices on the vehicle to reduce drag and make the vehicle aerodynamically streamlined. A more streamlined vehicle will be able to achieve high speeds and consequently, the fuel economy is also improved. The three-dimensional car model is developed in SOLIDWORKS v17. Computational Fluid Dynamics (CFD) is performed to understand the effects of these add on devices. CFD is carried out in the ANSYS™ 17.0 Fluent module. Drag Coefficient (CD), Lift Coefficient (CL), Drag Force and Lift Force are calculated and compared in different cases. The result of the simulations was analyzed and it was observed that different devices posed several different functionalities, but maximum drag reduction was found in the case of GT with spoiler and diffuser with a maximum reduction of 16.53%.

中文翻译：

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通过在赛车中使用空气动力学装置来减少阻力

在这个自然资源日趋枯竭的时代，燃油价格的上涨势头越来越大。凭借严格的环境政策规范，汽车制造商正在航行，以生产具有较低排放量的高效车辆。高速汽车在提供不折不扣的性能方面受到威胁，但是对排放量有严格的规定会促使公司采取不同的方法来保持性能要求不变。最受欢迎的方法之一是改善车辆的空气动力学性能。在车辆行驶中实现高速行驶时，阻力是主要的挫折之一。这项研究的目的是研究不同附加装置对车辆的影响，以减少阻力并使车辆在空气动力学上更流畅。更加精简的车辆将能够实现高速行驶，因此，燃油经济性也得到了改善。在SOLIDWORKS v17中开发了三维汽车模型。执行计算流体动力学（CFD）来了解这些添加对设备的影响。CFD在ANSYS™17.0 Fluent模块中执行。计算并比较了不同情况下的阻力系数（CD），升力系数（CL），阻力和升力。分析了仿真结果，发现不同的设备具有几种不同的功能，但是在具有扰流器和扩散器的GT情况下，最大阻力减小了，最大减小了16.53％。执行计算流体动力学（CFD）来了解这些添加对设备的影响。CFD在ANSYS™17.0 Fluent模块中执行。计算并比较了不同情况下的阻力系数（CD），升力系数（CL），阻力和升力。分析了仿真结果，发现不同的设备具有几种不同的功能，但是在具有扰流器和扩散器的GT情况下，最大阻力减小了，最大减小了16.53％。执行计算流体动力学（CFD）来了解这些添加对设备的影响。CFD在ANSYS™17.0 Fluent模块中执行。计算并比较了不同情况下的阻力系数（CD），升力系数（CL），阻力和升力。分析了仿真结果，发现不同的设备具有几种不同的功能，但是在具有扰流器和扩散器的GT情况下，最大阻力减小了，最大减小了16.53％。