SIMULASI CFD PADA TRUK STANDAR DENGAN BAK TERBUKA DAN TERTUTUP

Abstract

The aerodynamic load in the vehicle will affect the stability and fuel consumption in operation. One way to overcome this is to reduce the coefficient drag, which is correlated with the aerodynamic drag force on the vehicle. This study aims to determine the drag coefficient and the airflow characteristics of standard trucks using open and closed boxes. The results show that the truck with a closed box produces a lower drag coefficient than the open box truck. The Closed box
truck has an average drag coefficient, 20.1% lower than the open box. The flow visualization of the streamline that formed on the two trucks shows that the dominant turbulence and flow separation in the open box truck affects the drag coefficient results.