Improvement aerodynamic design for C-segment car

Ab Hamid, Ahmad Akram (2019) Improvement aerodynamic design for C-segment car. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Current automotive industry challenging to create design not only attracted to consumers but having performance in aerodynamic. Major benefit of aerodynamic to reduce fuel consumption. The purpose of this project used to achieve low drag coefficient (Cd) than actual design by reverse engineering method of C-segment of Proton Inspira car model 1:32 ratios. This project performed reverse engineering method, start with 3D scanning process by using REXCAN C2 Plus to the drawing model CAD. The actual design redesigned to reach low drag coefficient (Cd). The drag coefficient (Cd) of this project get from running the Computational Fluid Dynamics (CFD) simulation. Besides, the lowest drag coefficient reached performed SLS 3D Printing in car model size. The actual design as a reference of the design sample to reduce drag coefficient (Cd). The lowest drag coefficient data of design sample compared according to feature result of the CFD output. The drag coefficient of actual design reduced from 0.35 to 0.33 after the redesign process performed at trunk of the car. The drag coefficient changed after reducing drag forces based on the CAD surface of the car must smooth to the wind flow effortlessly.

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