TY  - EJOU
AU  - Li, Jichao 
AU  - Zhu, Xuexin 
AU  - Zhang, Cong 
AU  - Dang, Shiwang 
AU  - Chen, Guang 

TI  - CFD Simulation of Passenger Car Aerodynamics and Body Parameter Optimization
T2  - Fluid Dynamics \& Materials Processing

PY  - 2025
VL  - 21
IS  - 9
SN  - 1555-2578

AB  - The rapid advancement of technology and the increasing speed of vehicles have led to a substantial rise in energy consumption and growing concern over environmental pollution. Beyond the promotion of new energy vehicles, reducing aerodynamic drag remains a critical strategy for improving energy efficiency and lowering emissions. This study investigates the influence of key geometric parameters on the aerodynamic drag of vehicles. A parametric vehicle model was developed, and computational fluid dynamics (CFD) simulations were conducted to analyse variations in the drag coefficient () and pressure distribution across different design configurations. The results reveal that the optimal aerodynamic performance—characterized by a minimized drag coefficient—is achieved with the following parameter settings: engine hood angle (α) of 15°, windshield angle (β) of 25°, rear window angle (γ) of 40°, rear upwards tail lift angle (θ) of 10°, ground clearance (d) of 100 mm, and side edge angle(s) of 5°. These findings offer valuable guidance for the aerodynamic optimization of vehicle body design and contribute to strategies aimed at energy conservation and emission reduction in the automotive sector.
KW  - Automotive aerodynamic characteristics; flow field; aerodynamic drag; drag reduction optimization; CFD (computational fluid dynamics)

DO  - 10.32604/fdmp.2025.067087