IIT Bombay Wind Tunnel

Hello sir, I am Ronak Kawat. I am from Mumbai. I want you to help me by giving me some information about the Indian Institute of Technology Bombay (IIT) wind tunnel. Can you help me?

[Shaleen]

As you have asked about the Indian Institute of Technology Bombay wind tunnel, I am giving you information about it
Aerodynamics Laboratory of Department Aerospace Engineering has Wind and Water Tunnels to support a variety of studies. Force tests that form an essential part of Rapid Concept Evaluation were not possible due to lack of a balance. CASDE has now supported setting up this facility.

Low Turbulence Wind Tunnel

Located in the high Speed Lab at Ground floor in the Annex building.

In this tunnel, air is sucked by using a pair of contra rotating fans coupled
with a.c. motors of 3 h.p.

Air is sucked in through a honeycomb followed by a set of 4 screens to
reduce non-uniformity in the velocity of the air.

The tunnel has a contraction with the area ratio 10:1 and the test section of
304 X 228 mm.

In order to obtain the co-flowing streams of different velocities, a splitter
plate is fitted between the tunnel sidewalls.



132 X 80 mm blow down Supersonic Wind Tunnel Facility



Located at in the basement and ground floor in the Annex building.

Two stage reciprocating type compressor operated by 90 H.P. slip ring type
electric motor with cooling tower is located in the basement and outside
department.

To avoid over heating of components, an intercooler has been installed to
maintain a temperature of 500C. 300A Power supply and control panel is
used to run the motor and control the motor speed.

A high pressure reservoir of capacity 1000cu. ft. and maximum pressure of
200psi has been installed. A safety valve is provided set to blow off at
maximum pressure.

Temperature variation is 40 C due to expansion of air inside the reservoir.

A pressure regulator valve is used to provide constant stagnation pressure
to the settling chamber while the available pressure in the reservoir is
decreasing.

Settling chamber is a large low velocity section immediately provided
upstream the nozzle. Contraction follows settling chamber and accelerates
the flow to velocities up to 0.5 M before it enters the subsonic portion of the
nozzle.



Total length of the Con-Di nozzle is 398.88 mm. Total length of the test
section from flange to flange is 762 mm. Size of working area is 188X80
mm.