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Abstract—The rising fuel price and strict government regulations makes the road transport uneconomical
now a days. The exterior styling and aerodynamically efficient design for reduction of engine
load which reflects in the reduction of fuel consumption are the two essential factors for a
successful operation in the competitive world. The bus body building company’s precedence’s
are outer surface and structure of the bus and ignore the aerodynamic aspect. The present
intercity buses have a poor aerodynamic exterior design. This project aims to modify the outer
surface and structure of the bus aerodynamically in order to reduce the effect of drag force of
the vehicle which in turn results in reduction of fuel consumption of the vehicle. The Two prototype
bus body has been modeled by using CFD to reduce the drag force. These are namely model
1 and model 2. Model 1 is existing Volvo intercity bus model and model 2 is modification of
existing Volvo intercity bus. Model 2 is to modify and analyze by using CFD to reduce the drag
force, which results in increased performance and reduced the fuel requirement. The overall
reduction in aerodynamic drag force is 10%.
Index Terms—Aerodynamics, Drag reduction, Fuel consumption, Computational Fluid Dynamics, Bus
Cite: J Abinesh and J Arunkumar, "CFD Analysis of Aerodynamic Drag Reduction and Improve Fuel Economy," International Journal of Mechanical Engineering and Robotics Research, Vol.3, No.4, pp. 430-440, October 2014.