CFD Investigation of a Novel Fuel-Saving Device for Articulated Tractor-Trailer Combinations
CFD Investigation of a Novel Fuel-Saving Device for Articulated Tractor-Trailer Combinations
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DOI：
10.1080/19942060.2009.11015293
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发表时间：
2009-01
影响因子：
6.1
通讯作者：
V. Malviya;R. Mishra;J. Fieldhouse
中科院分区：
文献类型：
--
作者：
V. Malviya;R. Mishra;J. Fieldhouse
摘要提高商用车的空气动力学效率对于降低燃油消耗和排放具有重要意义。本文探讨了这种车辆的一种新型的节油装置所提供的优势。该装置使用移动表面来赋予附加动能以在屋顶表面附近流动。流动中的附加动量改变了流场，从而显著减小了压阻。阻力分布表明，半挂车的前、后表面和牵引车驾驶室是阻力的主要贡献者。阻力的总体减少已经通过表面上的压力分布以及飞行器每个表面对阻力的单独贡献来量化。新开发的装置已被证明是非常有效的减少拖拉机拖车的燃料消耗。
Abstract Enhancing the aerodynamic efficiency of commercial vehicles is gaining increasing importance as it helps to reduce both overall fuel consumption as well as emissions. This paper investigates the advantages offered by a novel fuel-saving device for such vehicles. This device uses a moving surface to impart additional kinetic energy to flow near the roof surface. The additional momentum in the flow modifies the flow field, thereby significantly reducing pressure drag. Distribution of drag shows that the front and rear faces of the semi-trailer and the tractor cab are the dominant contributors to drag. The overall reduction in drag has been quantified by the distribution of pressure on the surface as well as the individual contribution to drag by each surface of the vehicle. The newly developed device has been shown to be very effective in reducing the fuel consumption of tractor-trailers.