The subject of the study was the conceptual model of high-performance, ecofriendly urban car for the competition Shell Eco Marathon 2014 and 2015. The research was carried out as the part of the racing team Smart Power Urban Silesian University of Technology work. The study developed methods for conducting aerodynamic research for such types of vehicles.  The numerical models of conceptual development versions of the vehicle were created in the HyperWorks HyperMesh software with using the CFD module basing on the developed methodology. Simulation conditions were chosen according to the conditions during the race Shell Eco Marathon in Rotterdam and in accordance with generally accepted principles of tunnel research in the tunnel of the Institute of Aviation in Warsaw. In the research the resulting values ​​were the distribution of the drag forces and pressure distribution on the surface of the vehicle. In addition, using the software HyperView obtained the distribution of the airlines affecting the vehicle. Based on the obtained value ​​of the aerodynamic drag force on the surface of the vehicle, the aerodynamic coefficient Cx is calculated analytically. Analyzes suggest which version is considered the most advantageous from the point of view of minimizing drag force. Based on that model there will be made ​​prototype car. The analyzes outlined the direction of development of the solid of the conceptual car the next seasons for the Shell Eco Marathon race. After the completion of the car build is planned to make verification of the numerical research with the aerodynamic tests in the wind tunnel.


The Author

B.Sc. Mateusz Wąsik
Silesian University of Technology