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  • Wind Tunnel

    Aerodynamic and Aeroacoustic Excellence


The Center is active in the aerodynamic and aeroacoustic field, mainly on full-scale passenger cars, using its own automotive wind tunnel.
The purpose of this Website is to give general information on the measurement techniques developed and used by Pininfarina in its own Research Center, for the flow analysis and the aerodynamics and aeoracoustics development of the new vehicles.

ACTIVITIES

The Pininfarina Wind Tunnel has been, since 1972, a Center of Excellence for research and development in the field of aerodynamics and aeroacoustics. Modern facilities and advanced measuring techniques are available to support research work.
The main fields of activity of the Research Center are the following:

AERODYNAMICS AND AEROACUSTICS OF VEICHLES

  • PASSENGER CARS
  • RACING CARS
  • LOW-DRAG RESEARCH CARS
  • TWO WHEELS VEHICLES
  • AIRCRAFTS (scale models)
  • INDUSTRIAL VEHICLES
  • HIGH-SPEED TRAINS  (scale models)
  • COMPONENTS (open roofs, soft-tops, internal flows, radiators, ski-racks..)

WIND ENGINEERING,  SPORT AND OTHER

  • BUILDINGS
  • INDUSTRIAL FACILITIES
  • BRIDGES  (scale models)
  • SPORT GOODS
  • SPORT CHAMPIONS
  • SERGIO [ENGINEERING]
  • SERGIO [ENGINEERING]
  • SERGIO [ENGINEERING]
  • SERGIO [ENGINEERING]
  • Louis Vuitton Classic Concept Award (2006)
  • FERRARI P4/5 BY PININFARINA
  • OLYMPIC GAMES COMMITTEE - OLYMPIC TORCH
  • OLYMPIC GAMES COMMITTEE - OLYMPIC TORCH
  • Pininfarina Automotive

FACILITIES

Wind Tunnel

Dimensions of the facility – Test Section

  • Plenum Length = 13.30 m
  • Jet Length = 8.00 m
  • Width B = 9.60 m
  • Height H = 4.20 m
  • Balance reference center X/L = 0.46

Nozzle

  • Jet frontal area An = 11 m2 (Semi-circular shape)
  • Width Wn = 4.84 m
  • Height Hn = 2.82 m
  • Contraction ratio = 6.9:1

Drive system – Main Fan

  • DC Motor Power = 1.1 MW
  • Fan Diameter = 4.88 m
  • Number of Blades = 29

Drive system – 13 Fans

  • DC Motor Power (tot) = 2,2 MW
  • Fan Diameter = 1.8 m
  • Number of Blades = 13

Aerodynamic characteristics

  • Max Wind Speed Vw = 70 m/s (250 Km/h)
  • Velocity uniformity dV / Vw < ± 0.5 %
  • Turbulence level = 0.3%

Mean flow angles

  • vertically a = 0.0°
  • horizontally a = 0.0°

Max local flow angles

  • vertically a = ± 0.5°
  • horizontally a = ± 0.5°

Boundary layer displacement thickness, at the balance center and V=140 Km/h:

  • static floor d* = 11.2 mm
  • moving floor d* = -0.1 mm

Aeroacoustic characteristics. Noise Level measured in the Test Section Plenum, out of the jet, at x=balance center

  • SPL (Aw) = 68 dB(A) at V = 100 Km/h70
  • SPL (Aw) = 78 dB(A) at V = 140 Km/h80

Ground Effect Simulation System

Allows to put in rotation the wheels of the vehicle and to simulate the motion of the ground under the car.

Turbulence Generation System

To produce on demand a flow of controlled turbulence… similar to that on the road.

Workshop

Reserved Areas

The Wind Tunnel includes three independent and separated boxes in order to guarantee wind tunnel users the highest level of confidentiality for their tests. These reserved areas are used for the preparation of the cars before the tests and for the safe storage of the cars before and after the tests.

 

MEASUREMENTS

  • Forces Measurement: Balance
  • Pressure Probes:14-hole Probe
  • Pressure system (CHELL multipressure scanner)
  • Pressure Probes: Cobra Probe
  • Pressure Probes: Microdaq
  • Laser Probes: Piv (possible, must be planned)
  • Anemometer Probes: Hot-wire
  • Anemometer Probes: Mini Air
  • Anemometer Probes: Glue On
  • Anemometer Probes: The Brake Disk Cooling
  • Anemometer Probes: Test Radiator
  • Measures Of Deformation: Balloning
  • Measures Of Deformation/vibration: Auto Bonnet
  • Acoustic Comfort: Interior Noise
  • Acoustic Comfort: Exterior Noise
  • Acoustic Comfort: Comfort Helmet
  • Acoustic Comfort: Beamforming 2d/3d
  • Three Microphones array’s (cieling, side and front): Exterior Noise
  • Four Acoustic Heads: Interior Noise

Pininfarina



vangogh srl

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Via G. Amendola, 7, 20063 Cernusco sul Naviglio, MI, Italia
+39029243129
06727330968


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