Aerodynamic analysis of car rear spoiler with computational fluid dynamics for different angles and profiles

Abstract

The aim of the study is to compare the drag coefficient, downforce coefficient, and downforce created by the spoiler by analyzing them with the help of the Computational Fluid Dynamics (CFD) program at different wing profiles, different angles of attacks, and speeds. Solidworks was used to create the geometry for CFD analysis. ANSYS Fluent was used as the CFD analysis program. Two airfoil profiles BE153-055 and BE153-175, were selected for analysis to compare different airfoil profiles. Selected airfoils were placed at 10° and 20° angles of attack to compare different angel of attacks and analyzed at 30 (m/s), 50 (m/s) and 70 (m/s) velocities to compare different velocities. According to the analysis results, it was observed that downforce increased in direct proportion to the camber line, angle of attack, and speed. The highest downforce was obtained in BE153-175 airfoil, 20 degrees angle of attack, and 70 (m/s) speed.

Keywords

• Airfoil
• Downforce
• Computational fluid dynamics (CFD)
• External flow

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