The effect of front and rear windscreen angles on the aerodynamic drag force of a simplified car model

Öz

Computational fluid dynamic (CFD) is a flow modelling technique which utilizes iterative methods to solve continuity and momentum equations along with any appropriate auxiliary equations depending on the application. This paper studied the effect of front and rear windscreen angles of a car on the drag force for the case of the Citroen C5 2007. Numerical results were obtained based on the finite volume method (FVM). The aerodynamic behavior of the car was studied with different front and rear windscreen angles. The initial results helped to estimate an optimal shape for the car based on the least drag coefficient. Consequently, an optimal car shape is proposed by improving the car’s aerodynamic design including the surface roughness and windscreen angles. This has potentially reduced the drag coefficient by 8.88 % compared to the initial design. This would offer a significant opportunity for reducing the fuel consumption.

Anahtar Kelimeler

• Drag coefficient,Airflow,CFD,FVM,Aerodynamic

Kaynakça

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