Low Speed Aerodynamics Lab

Research Areas                                                         

  • Unsteady aerodynamics,
  • High – AOA aerodynamics
  • Flow control on airfoils, wings and other bodies
  • Bluff body flows
  • Wind engineering
  • Decelerator aerodynamics
  • Transition

 Low speed aerodynamics laboratory has several wind tunnels to carry out experimental research in the areas of aerodynamics. A brief description of these facilities are given below.

Low Turbulence Tunnel
This is a open-return suction type tunnel powered by a 2.5 H.P. DC fan. The outlet from a 8:1 contraction has a rectangular cross section of 12" x 16" and exit velocities up to 25 m/sec. Downstream of the contraction there is a 48" long working section which could be extended if needed. The fan is equipped with a variable speed control.

Boundary layer Tunnel
This is another open-return sunction type tunnel powered by a 20 H.P. fan. This facility has a contraction ratio of 9:1, and has a 120" long working section with a 24" x 24" cross section. It has a variable speed range up to 20 m/sec.

Twin Air or 5-D Tunnel
This tunnel is a closed circuit type with two test sections: one is 3-D and the other is 2-D. This is powered by two 15 H.P. fans and has variable speed control. The 2-D side of the tunnel has a contraction ratio of 12:1 and a 60" long working section with a cross section of 12"x 48". Maximum speed in this side is about 40 m/sec. On the 3-D side, the tunnel has a contraction of 11:1 and a working section of 24" x 36". Maximum speed in this side is about 30 m/sec.

Smoke Tunnel
This tunnel has a cross section of 2"x 48", and the speed can be varied up to 6 m/sec. It is equipped with a smoke generator and a smoke injection system.

Supporting Equipment and Instruments
Presently the aerodynamics laboratory is equipped with following equipments:

  • Virtual Instrumentation based data acquisition system
  • High-speed Image acquisition and processing system
  • DISA hot-wire anemometry
  • Pressure scanners
  • Flow visualization system
  • Strain gage and Mechancal balances
  • Digital storage oscilloscope.         
  • Spectrum analyser.
  • Transducers and probes of different types to measure both steady and unsteady flow quantities                                                


Prof. K. Poddar - Aerodynamics, Turbulence, Low and High Speed Flows
Dr. Debopam Das- Aerodynamics, Experimental Fluid Dynamics
For further information, Please contact

Dr. K. Poddar
Low Speed Aerodynamics Laboratory
Department of Aerospace Engineering
Indian Institute of Technology
Kanpur - 208 016 (UP)
Phone Numbers
Lab:   +91 (512) 259-7812
Off:    +91 (512) 259-7293
Fax:  +91 (512) 259-7561
E-mail - kamal(at)iitk.ac.in