Study of influence of the opening of the windows and the speed of circulation in the aerodynamics of a vehicle tourism

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Angel Yasmany Aguilar Romero
Rolando Ismael Caldas Siavichay
Juan Andrés Rivera Caravajo
Erik René Tapia Viñay


This article presents the aerodynamic study of a tourism vehicle, taking as a case study the Chevrolet Forsa 1.3, in which road tests are performed to obtain values of the aerodynamic coefficient (Cx) and the coefficient of friction (Fr) in different opening positions of the windows and various Vehicle speeds.In order to corroborate the information obtained during the tests to calculate the Cx , a modeling of the vehicle to be used in SolidWorks is carried out, with the intention of performing a simulation that allows to obtain the values of the Cx when the windows are in different positions and at a specific speed. In addition an experimental design is realized in Minitab, which allows to know the incidence that has the variables of either opening the windows or speed of the vehicle on the Cx and Fr. The results show that the value of Cx increases as the windows of the vehicle are opened when traveling at speeds in excess of 90 km/h, which means more resistance to progress and therefore an increase in fuel consumption and pollutant emissions.
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