05.2021.207.218

Investigation of Aerodynamic Forces on Tracked Vehicles Affected by disturbing Winds

Author(s):

Marwa Y. Jleel and Haider J. Abid

Affiliation(s):

Mechanical Engineering Department, University of Thi-Qar, Iraq.

Corresponding Author Email: haider-jabaur-abid@utq.edu.iq

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

The self-driving car industry has taken great care to enhance road safety and driving experience by monitoring small distances between vehicles, among the factors that affect it is the distribution of winds . This paper will be studying the pressure and velocity distributions on the surface of the body of a passenger car (Chrysler300s) under the effect of wind at various angles (0o,35º, 90º, and 125º) when tracking another passenger car, as well as when tracking an SUV (Mercedes G-Class) car with three distances (5m,10m, and 15m) when the vehicle speed was 120 km / h and the air speed 80 km / h. Using CFX Ansys R (19.0) simulation program. The results showed that the largest value of the reaction force of the front tires is on the front right tire (Tire FR) of the passenger car at an angle of 35 o and a distance of 15 meters between the two tandem cars. The drag force of the two tandem cars decreases as the distance between them decreases and the drag force on the rear car is less than the front car because this may refer to that design of the Chrysler class does not generate significant wakes.