Optimization of aerodynamic performance by applying the combination of lamellar and 3D wheel deflectors on the SUV model

In the developmental phase of an electric SUV model, optimizing the SUV model’s aerodynamic performance often involves the use of wheel deflectors to control airflow around the front wheels. While lamellar wheel deflectors are a common choice for reducing aerodynamic drag, the automotive industry is increasingly embracing 3D wheel deflectors to enhance drag reduction efforts. This study delves into the flow patterns surrounding the front wheels and the drag reduction mechanisms brought about by wheel deflectors. In this research, we harness the strengths of both lamellar and 3D wheel deflectors to introduce a more effective design approach. The conceived wheel deflectors aim to simultaneously decrease aerodynamic drag and lift, a dual-purpose strategy that extends the SUV’s range and optimizes its stability at high speeds. To validate these optimization effects, comprehensive Computational Fluid Dynamics (CFD) simulations and subsequent wind tunnel testing are conducted. The findings presented in this paper establish a crucial foundation for the design and optimization of wheel deflectors, contributing to advancements in the field.