Compound aerodynamic drag reduction schemes of van type trucks based on morphological bionics

doi:10.3969/j.issn.1674-8484.2023.02.009

Abstract

Abstract:

Three types of new aerodynamic drag reduction schemes for the shroud, the cab and the cargo compartment were designed based on morphological bionics, and so done a composite bionic drag reduction scheme of a van type truck to reduce the aerodynamic drag. The effects of three single bionic drag reduction schemes on the aerodynamic drag coefficient and their drag reduction mechanism were investigated. The drag reduction effect of the composite bionic drag reduction scheme was investigated by combining the three single drag reduction methods together. The results show that the optimal drag reduction rates of bionic shroud model, bionic cab model and bionic cargo compartment model are 3.57%, 9.45% and 11.86%, respectively, compared to the original truck model. The reduction rate of aerodynamic drag coefficient of the composite drag reduction scheme is 24.5%, and the drag reduction effect is obvious. Therefore, the drag reduction structure of the van based on morphological bionics design improves the flow field structure around the van and reduces the aerodynamic drag.

Key words: van type trucks, morphological bionic design, aerodynamic drag coefficient, compound drag reduction, shroud, cab, cargo compartment

CLC Number:

U461.1

XU Jianmin, GONG Xiaoyan, SONG Lei, ZHENG Qingjie. Compound aerodynamic drag reduction schemes of van type trucks based on morphological bionics[J]. Journal of Automotive Safety and Energy, 2023, 14(2): 224-231.

Figures/Tables 26

References 23

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模型编号	l / L	C_D	减阻率/%
1	1/10	0.849	2.30
2	2/10	0.845	2.76
3	3/10	0.838	3.57
4	4/10	0.844	2.88

模型编号	l / L	C_D	减阻率/%
1	1/10	0.849	2.30
2	2/10	0.845	2.76
3	3/10	0.838	3.57
4	4/10	0.844	2.88

水平	因素1 ，	因素2，	因素3 ，
水平	θ / (°)	b / m	w / m
1	120	0.8	0.7
2	130	1.1	1.0
3	140	1.4	1.3

水平	因素1 ，	因素2，	因素3 ，
水平	θ / (°)	b / m	w / m
1	120	0.8	0.7
2	130	1.1	1.0
3	140	1.4	1.3

模型	θ / (°)	b / m	w / m	C_D	减阻率 / %
1	120	0.8	0.7	0.800 6	7.87
2	120	1.1	1.3	0.797 5	8.23
3	120	1.4	1.0	0.790 2	9.07
4	130	0.8	1.3	0.802 0	7.71
5	130	1.1	1.0	0.815 9	6.11
6	130	1.4	0.7	0.803 2	7.57
7	140	0.8	1.0	0.812 7	6.48
8	140	1.1	0.7	0.819 8	5.66
9	140	1.4	1.3	0.810 9	6.69