The present work deals with aerodynamic drag reduction of an urban-concept car for energy-efficient competition. Several modifications have been proposed to the original design of the urban-concept of the car. In order to investigate the effect of the proposed modifications numerical method has been developed. In the numerical method three-dimensional governing equations have been solved numerically. Turbulent flow is modeled using k-epsilon model. The two designs have been simulated at five different inlet velocities. The inlet velocity varies from 10 m/s to 20 m/s. The velocity contour, velocity vector and pressure distributions have been plotted. The results show that the proposed modifications improve the performance of the proposed design. At the given inlet velocities, the aerodynamic drag coefficient of the new design decreased 26.63 % in comparison with original design. It is recommended to modify the original design of the urban concept car by implementing the proposed modifications. The new design will improve the performance of the urban concept car.
展开▼
机译：目前的工作涉及为节能竞赛而减少城市概念车的空气动力学阻力。已经对汽车的城市概念的原始设计提出了一些修改。为了研究所提出的修改的效果，已经开发了数值方法。在数值方法中，三维控制方程已被数值求解。湍流使用k-ε模型建模。两种设计已在五种不同的入口速度下进行了仿真。入口速度从10 m / s到20 m / s不等。绘制了速度轮廓，速度矢量和压力分布。结果表明，提出的修改改进了提出的设计的性能。在给定的进气速度下，新设计的空气阻力系数与原始设计相比降低了26.63％。建议通过实施建议的修改来修改城市概念车的原始设计。新设计将改善城市概念车的性能。
展开▼
