Aerodynamic optimization of the body of a bus

The research is aimed at the aerodynamic study of the bus bodywork with computational dynamic fluids (CFD) software and through a wind tunnel in order to validate the results obtained in the virtual software, different geometries of the bodywork were evaluated by printing 3D prototypes on a scale of 1:200, which has resulted in a body formed by two spoilers, another one with a front deflector and a finally one with the original body, presenting the second option a higher lift coefficient with the reduction of turbulence zones and an optimum drag coefficient according to the INEN 1323-2009 standards. For the data acquisition process it was necessary to use sensors to measure the wind pressure generated in the tested area and in the process and visualization of the generated signals in the wind tunnel as well, for this reason it was necessary to make a conditioning of the signal obtained by the sensor circuit designed in the Proteus software. Finally, to develop the interface for signal data processing and monitoring it was necessary a data acquisition card programmed in LabView.