Wind Tunnel Facility

Sub-sonic wind tunnel

The sub-sonic, suction type non-return wind tunnel has 6:1 contraction ratio. The tunnel aids in understanding the flow field and pressure distribution around various geometric shapes of engineering and academic interest (viz: flat plate, cylinder and aerofoils). Flow field visualizations are carried out using a green laser, whereas the pressure distributions are obtained through a 32-port electronic pressure scanner.

Specifications
  1. Test section 600x600 mm
  2. Length of the test section 4 meters
  3. Maximum test section velocity 45 m/s
  4. Contraction ratio 6:1
  5. Maximum power 22KW
  6. Maximum RPM:1500
  7. Diameter of the Propeller blade: 1.3m
  8. Turbulence level: Below 2%

Flow visualization over an aircraft model


Wind Tunnel Facility

Supersonic wind tunnel

Blow down type supersonic wind tunnel, operates in the range of Mach number (M = 1.5 to 3.5). A 14.14 cubic meter storage tank delivers air at 20 bar. Desired Mach number in the test section is obtained by varying the nozzles. Schlieren and Shadowgraph techniques are used to demonstrate/understand the dynamics of shock waves for varying Mach numbers for flow past a wedge and the blunt nose of cylindrical cone.

Specifications
  1. Test section dimension 100X100 mm
  2. Range of Mach No:1.5 to 3.5
  3. Maximum Stagnation pressure: 10 bars/s
  4. Test duration: 20 sec. nominal
  5. Pressure measurement :16 port pressure scanner
  6. Volume of Pressure tank:14.14 m3
  7. 20 hp Compressors-with air coolers and dryers
  8. Maximum Pressure storage capacity: 20 bars

Flow visualization using supersonic tunnel

Open jet facility

Supersonic wind tunnel

Flow acoustics and exhaust flow characteristics are complemented with a supersonic open jet facility, which can operate at M = 2.5.

Specifications
  1. Blow down type
  2. Maximum Mach No:2.5
  3. Maximum Stagnation pressure: 10 bars
  4. Test duration: 100 sec. nominal
  5. Pressure measurement :16 port pressure scanner
  6. Volume of Pressure tank:14.14 m3
  7. Maximum Pressure storage capacity: 20 bars
  8. 20 hp Compressors-with air coolers and dryers
  9. Nozzle exit diameter=25 mm (max.)

Flow visualization using open jet facility