基于仿生导流罩的厢式货车减阻研究*

doi:10.19562/j.chinasae.qcgc.2019.03.007

Abstract

Abstract: In order to reduce the aerodynamic resistance of a van-type truck, six cab-roof fairings are designed and added on the truck model to conduct a numerical simulation on their aerodynamic characteristics, with the distributions of velocity, pressure and turbulent kinetic energy in the exterior flow field of truck model obtained, and the drag reduction mechanism of different fairings are analyzed in detail. On this basis, a bionic cab-roof fairing is designed by mimicking the head shape of a seal, and its drag reduction performance on truck is simulated. The results show that all six cab-roof fairings previously designed have a certain effects of drag reduction, but the bionic cab-roof fairing designed later can greatly improve the flow field structure at cab-roof and has better drag reduction effect, with a drag coefficient 31.1% lower than that of original truck model

Key words: van-type truck, bionic cab-roof fairing, aerodynamic drag reduction, computational fluid dynamics

Xu Jianmin. A Research on Drag Reduction of a Van-type Truck with a Bionic Cab-roof Fairing[J]., 2019, 41(3): 283-288.

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A Research on Drag Reduction of a Van-type Truck with a Bionic Cab-roof Fairing

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