Effect Of Yaw Angle On The Aerodynamics Performance Of Rear Spoiler-By CFD Study

Tee, Jia Wei (2015) Effect Of Yaw Angle On The Aerodynamics Performance Of Rear Spoiler-By CFD Study. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The aerodynamic performance of vehicle has become more and more important over the past few decades. The attention of vehicle stability has become another concern apart from fuel efficiency. A high speed travelling vehicle will become unstable when experiencing strong cross wind or cornering that can affect traffic safety. The proper installation of rear spoiler can help to stabilize the vehicle, particularly at the rear part. However, there are a few types of rear spoiler with different configurations. The purpose of this project is to investigate the effect of yaw angle on the aerodynamic performance of hatchback car using Computational Fluid Dynamics (CFD). The models are meshed and simulated by specific settings and boundary condition. The results obtained are drag, lift, pitch moment, and yaw moment coefficient. Drag coefficient is compared with wind tunnel results for validation. The findings show that model with non-slotted spoiler is most efficient to reduce drag and lift at 0° yaw angle. On the contrary, double-slotted spoiler shows the best result in yaw moment coefficient reduction.

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