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Numerical Analysis of Drag Reduction Using Aerodynamic Designs in a Passenger Bus

The vehicles are used such as cars, passenger buses, trucks and heavy vehicles. The drag reduction is directly effect on the fuel saving as well as the efficiency of the vehicle. Due to higher prices, limited supply and negative impacts on the environment by fossil fuel, automobile industries have directed their concentrations in reducing the fuel consumption of vehicles to achieve the lower aerodynamic drag. As a consequence, numerous researches have been carried out throughout the world for getting the optimum aerodynamic designs with lower drag and decreases fuel consumption. Hence, for the analysis, a Computational Fluid Dynamic (CFD) analysis has been done using ANSYSR19.0 workbench. Three demo base models are considered for the analysis namely model-1 made of a plastic body, model-2 made of metal body and model-3 of BD bus that runs on the Bangladeshi roads. Some extensive modifications are done in the bus body such as the front and rear side area which helps to reduce the aerodynamic drag of the bus. The analyses for the drag forces and drag coefficient have been done for model-1, 2 & 3 as well as for their respective modified models. For base model-1, the drag force is reduced as 0.027 N, the drag coeffic1qient, Cd is reduced as 0.30. For base model-2, the drag force is reduced as 0.062 N, the drag coefficient, Cd is reduced as 0.37. On the other hand, the CFD values at a velocity of 110 km/h for base model-3 the drag forces are reduced for base model modified-1, base model modified-2 as 1987.20 N, and 2499.80 N, respectively. The drag coefficients, Cd is reduced for base model modified-1 and base model modified-2 as 0.16, 0.26, respectively.

Aerodynamics Drag Reduction, Drag Force, Drag Co-efficient, Fuel Saving, CFD, ANSYS

APA Style

Md. Rezaul Karim Sikder, Mohammad Zoynal Abedin. (2023). Numerical Analysis of Drag Reduction Using Aerodynamic Designs in a Passenger Bus. American Journal of Mechanical and Industrial Engineering, 8(4), 90-98.

ACS Style

Md. Rezaul Karim Sikder; Mohammad Zoynal Abedin. Numerical Analysis of Drag Reduction Using Aerodynamic Designs in a Passenger Bus. Am. J. Mech. Ind. Eng. 2023, 8(4), 90-98. doi: 10.11648/j.ajmie.20230804.11

AMA Style

Md. Rezaul Karim Sikder, Mohammad Zoynal Abedin. Numerical Analysis of Drag Reduction Using Aerodynamic Designs in a Passenger Bus. Am J Mech Ind Eng. 2023;8(4):90-98. doi: 10.11648/j.ajmie.20230804.11

Copyright © 2023 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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