The Experimentally and Numerically Determination Of The Drag Coefficient Of A Bus Model

Authors : Cihan BAYINDIRLI, Mehmet ÇELİK

Pages : 117-123

Doi:10.18245/ijaet.486409

View : 20 | Download : 7

Publication Date : 2018-11-12

Article Type : Other Papers

Abstract :In this study, the drag coefficient of a 1/33 scaled bus model were determined by experimentally in wind tunnel and numerically in Fluent®. The tests were performed at 6 different free flow rates and between the range of 382 866- 792 900 Reynolds numbers and 13.54m/s - 28.05m/s free flow velocity. The three similarity conditions were provided in tests. The flow analyses were conducted in 1/40 scaled wind tunel as experimentally using Reynolds independent. The aerodynamic drag coefficient insert ignore into journalissuearticles values(CD); of the bus model was calculated as 0.633 in wind tunnel. The experimental results of bus model are verificated by numerical flow analysis in Fluent® program. According to numerical results, the drag coefficient of bus model is calculated as 0.645 with 1.81% error margin.
Keywords : Vehicle aerodynamic, drag coefficient, wind tunnel, bus model, CFD, Fluent