The Pininfarina Wind Tunnel supports the realization of aerodynamic vehicles sculpted by the wind. The Ground Effect Simulation System reproduces the real vehicle motion conditions, while the Turbulence Generation System, creates different conditions of controlled turbulence flow, as ambient wind, first phase and overtaking, and wind gust.
Ground Effect Simulation System
Through four rollers and three mats, one central and two placed in front of the front wheels (T-belt), the GESS system (Ground Effect Simulation System) allows the wheels of the car and the ground to move at the same wind speed. This system was developed to make the tunnel test conditions as faithful as possible to the road conditions, above all in order to be able to analyse the flows below the car, which in the case of soil and fixed wheels would be qualitatively different from the real ones.
Turbulence Generation System
Through a computerized system, it is possible to control the movement of five pairs of wings placed inside the nozzle to obtain different turbulence conditions in the test chamber. The TGS (Turbulence Generation System) allows simulating different atmospheric turbulence intensities by reproducing the Von Karman spectrum over the entire frequency range. It is also possible to simulate side wind gusts, driving conditions in the wake of another vehicle and overtaking.
The maximum wind speed, 250 kph
The moving ground (T-Belt) / Wheels drive system 250kph
Turbulence flow in laminar condition < 0.74%