Abstract
Aerodynamic is considered the most significant factor affecting on vehicles fuel consumption and power requirements even at low speed. For this reason, there are much interest and some modifications that decrease drag coefficient and reduce the aerodynamic effectiveness. This study aims to develop an electrical car body (ECB) to decrease the drag coefficient and study the reflection of this parameter in the power consumption rate in different operating speeds. Six different models for car bodies (Bendra, Magenta, Violet, Bluria, Aqua and Vectra) with same wheelbase, height, and track width dimensions are designed. The design of these models has done using Solidworks software by surface tools. Numerical results (frontal area, drag coefficient, drag area and drag force) for the six models are recorded and compared to choose the best designed body. According to results Vectra model is chosen as a best design. The power consumption is calculated for each model at different operating speeds using two different software, Solidworks flow simulation and ANSYS fluent. Experimental results are obtained by testing 3D printing model for the best efficient model with scale 1: 25 at small subsonic open wind tunnel. The experimental results show good agreement with simulation results. Finally, Vectra simulation and experimental results are compared with the real electric and petrol cars to verify the competitive design for Vectra model.
Highlights
One of the main contributors to the greenhouse effect is the burning of fossil fuels for transportation and heating
Which mean that when the VECTRA model go on the road at V=30 m8 磅/s, the power consumption will be about 9 KW
Which mean that when the VECTRA model go on the road at V=30 m/s, the power consumption will be about 9 KW
Summary
One of the main contributors to the greenhouse effect is the burning of fossil fuels for transportation and heating. The transport sector is currently the main consumer of fossil fuels. Car manufacturers are starting to implement a more sustainable approach when developing vehicles with the focus on electric vehicles in order to reduce the use of fossil fuels. A significant contribution to the energy consumption of vehicles comes from the air resistance that a vehicle is exerted to. The air resistance can reach up to 48% of the total driving resistance at highway speeds [1]. Aerodynamic Design of cars is crucial as it directly affects the fuel economy & stability in motion
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