Computational investigation on drag coefficient and pressure distribution of the truck with add-on

IF 5.9 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY Ain Shams Engineering Journal Pub Date : 2025-03-01 DOI:10.1016/j.asej.2025.103332

M.S. Karthik , P. Siva Kota Reddy , Rahul Makwana , Shivakrishna Dasi , Fehmi Gamaoun , Chander Prakash , T.V. Smitha

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Abstract

The current demand for reducing the drag coefficient represents one of the most significant challenges for all truck manufacturers. Fuel consumption can be improved via aerodynamic effects, which lower the vehicle’s drag coefficient. The external truck body design aids in lowering the drag coefficient, which lowers fuel consumption. The numerical study was executed using the Computational Fluid Dynamics package, which is STAR CCM+, to investigate the coefficient of drag and surface pressure distributions of the truck with add on. Truck geometries have been designed in Autodesk Fusion-360 within standard geometry with variations in shape and external drag-reducing devices. NASA’s experimental value of Generic Conventional Model had a drag coefficient of 0.4267. In contrast, the truck trailer geometry with add-ons had a drag coefficient of 0.35777 is obtained, resulting in a 19.28% decrease in the drag coefficient. Further, a 19.28% decrease could result in 7% fuel savings on a level road.

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带附加装置卡车的阻力系数和压力分布计算研究

当前对降低阻力系数的需求是所有卡车制造商面临的最大挑战之一。燃油消耗可以通过空气动力学的影响，降低车辆的阻力系数提高。外部车身设计有助于降低阻力系数，从而降低油耗。采用STAR CCM+计算流体动力学软件进行了数值研究，研究了加装后卡车的阻力系数和表面压力分布。卡车几何形状是在Autodesk Fusion-360中按照标准几何形状设计的，具有形状变化和外部减阻装置。NASA通用常规模型的实验值阻力系数为0.4267。与此形成对比的是，加装附件的卡车挂车几何形状的阻力系数为0.35777，其阻力系数降低了19.28%。此外，在平坦的道路上，降低19.28%可以节省7%的燃油。

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.