My team won first prize for presenting this design in Science and Technology Exhibition at Sharda University's Technical Fest.

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I designed a wind-tunnel for studying the effects of air moving past solid bodies moving at sub-sonic velocities (velocities lesser than the speed of sound i.e. < 980 kmph or 610 mph). The specifications of the test chamber and the fan (which blows air in to the test chamber) is designed in such a way that the mach number remains less than 0.8. The accuracy of this design is tested by conducting CFD analysis on the CAD Model.

I then assembled and led a team of 8 students who fabricated the wind-tunnel. The sub-sonic wind-tunnel can calculate the air-resistance (in newtons) an object will face while moving at a certain velocity. The speed of the fan can be regulated to achieve desired velocity of air in the test chamber. A small model of the object (ball, cube, toy air-craft, etc) to be tested is placed in the closed test-chamber. A digital display at the bottom of the test chamber displays the air-resistance experienced by the object. The value of this force due to air-resistance depends on various factors like velocity of object (or air), surface roughness of the object surface in contact with air, and shape of the object.

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