Numerical study on aerodynamic drag by variation of rear side slope of sedan cars

Aerodynamic drag is the force that acts on a body moving through air opposite to the direction of motion of the body. Drag force affects the performance of aircraft, road bikes or cars as it works opposite to the direction of movement. About 50 to 60 percent of total fuel energy is lost only to over...

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Bibliographic Details
Main Authors: Mahmud, Md Jisan, Mehedi, Masnun, Ali, Mohammad
Format: Conference Proceeding
Language:English
Subjects:
Aerodynamic drag
Aerodynamics
Aircraft industry
Aircraft performance
Automobile industry
Automobiles
Automotive engineering
Automotive fuels
Bicycles
Computational fluid dynamics
Design modifications
Drag
Drag reduction
Optimization
Separation
Shape effects
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Summary:Aerodynamic drag is the force that acts on a body moving through air opposite to the direction of motion of the body. Drag force affects the performance of aircraft, road bikes or cars as it works opposite to the direction of movement. About 50 to 60 percent of total fuel energy is lost only to overcome this force. The drag reduction of cars is a major topic in the automotive industry because of its close link with fuel consumption reduction. One of the main causes of aerodynamic drag for sedan cars is the separation of flow near the rear end of the vehicles. The objective of this research is to study the flow behavior around sedan cars with a particular type of rear shape. In this research, computational fluid dynamics (CFD) technique is used. This research focuses on investigating the effects of rear side design modification of sedan cars to reduce flow separation. This paper presents the optimization result, the effect of rear shape modification in the flow field like, the increase in rear side slope angle decreases drag and how these effects take place.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5115872