Aerodynamic Analysis of Fiberglass E-Falco Car Body to Get Drag Coefficient with Numerical Analysis

Abstract

One of the developments in automotive technology is identified by the increasing variety of vehicle products in the market. This development also leads to the refinement of the design of a more aerodynamic car shape to reduce air friction which can reduce material consumption. Because in theory, the aerodynamic shape of the vehicle's body can reduce fuel consumption and minimize the forces that hinder the vehicle's speed. The purpose of this study is to design a more aerodynamic car body, determine the air flow pattern around the car, and simulating the design of the car body to determine the amount of drag coefficient, using Spoiler and without spoiler E-Falco Car Body with variations in speed of 10 km/h, 20 km/h and 40 km/h. The results of this study indicate that the greater the driving speed, the greater the drag generated. The average drag coefficient for the 3 speed variations is 1,995 for design I and 1,905 for design II. The smallest drag coefficient with a value of 1.887 occurs in Design II with a speed used of 40 km/hour and the largest value of the coefficient of drag with a value of 2.043 occurs in Design I with a used speed of 10 km/hour. Design model II is more aerodynamic than design I, the smallest drag coefficient is 1.887. So that the body for the KMLI 2020 competition is recommended to use the design model II which use Spoiler.