Influence of Hollow Roof Spoilers on the Aerodynamic Drag of Hatchback Vehicles
The hollow roof spoiler has become a new trend in automotive styling design,significantly impacting the vehicle's aerodynamic performance.To study the influence of the spoiler parameters on aerodynamic drag coefficient,CFD simulations were conducted to analyze cases with different spoiler angles,passage sizes,and D-pillar spoilers based on a BYD hatchback model with a hollow roof spoiler.The simulation results agree well with wind tunnel experiment results.It is found that the volume of the upper tail flow increases with a decrease in the spoiler angle,a reduction in the passage size or the addition of a D-pillar spoiler.A lower drag coefficient is obtained when the upper tail flow more effectively matches with the lower tail flow.The findings of this paper are valuable for guiding future designs of hollow roof spoilers.
vehiclehollow roof spoileraerodynamicwind tunnel testDES turbulence model
国家科技期刊平台
NSTL
万方数据
维普
