Affiliation:
1. AGH University of Science and Technology , Poland
Abstract
Abstract
This paper presents simulation studies on the aerodynamics of vehicles moving in an organized column. The object of research is a column that consist of three vehicles of the same type (homogeneous column). In this research geometry of Ford Transit was used. As a part of the studies, the air drag forces acting on individual vehicles were calculated. The results are presented in dimensionless drag coefficient. The influence of the distance between cars on the generated force was also determined. In the first stage of the work, a numerical model was developed based on the Ahmed body reference structure. The calculations were carried out for 9 different velocities. The obtained results of the drag coefficient were compared with the work of other authors. The applied turbulence model and parameters of the boundary layer were used to create a numerical model of a moving column of vehicles. Mesh independence for numerical model of van was verified. The Finite Volume Method was implemented in the ANSYS Fluent program and used for the calculations. The use of supercomputers was necessary due to the large size of the grid.
Reference13 articles.
1. Bayraktar, I., Landman, D., Baysal, O. (2001). Experimental and Computational Investigation of Ahmed Body for Ground Vehicle Aerodynamics. SAE Technical Paper 2001-01-2742.10.4271/2001-01-2742
2. Birol, F. (2016). CO2 emissions from fuel combustion, International Energy Agency.
3. Birol, F. (2017). CO2 emissions from fuel combustion, International Energy Agency.
4. Browand, F., McArthur, J., Radovich, C. (2004). Fuel Saving Achieved in the Field Test of Two Tandem Trucks. UC Berkeley: California Partners for Advanced Transportation Technology, pp. 1-28.
5. Ciesielka, W., Hamiga, W. (2018). Numerical modeling of airflow over column of vehicles using ANSYS® package, E3S Web of Conferences, 46, art. no. 00025, pp. 1-8.