Computational Analysis for Enhancing Motorcycle Aerodynamics by Modifying Engine Bay Openings

Improving aerodynamics is crucial for enhancing the stability, efficiency, and performance of motorcycles.Computational fluid dynamics (CFD) is utilized to study the effect of engine bay modification on aerodynamic behavior.At flow speeds of 25 and 36 m/s, flow over two different design configurations, one with a fully enclosed engine bay and the other providing the optimal opening orientation, was evaluated.The results show that incorporating an engine bay opening decreases the induced pressure by 12.06% and 11.53%, resulting in a decrease of 1.64% and 1.19% in drag force, respectively.Analysis of the velocity field demonstrates effective management of the airflow with the reduction of turbulence and pressure recovery improvement at the rear section.Further, the formation of a low-pressure suction zone adds to aerodynamic stability, which is essential for high-speed operation.The analysis shows engine bay structure enhancements as an effective method to minimize drag and boost performance parameters for motorcycle designers in their development work.