DESIGN AND FABRICATION OF LOW COST OPEN CIRCUIT SUBSONIC WIND TUNNEL

A subsonic wind tunnel is a device used to create a fast stream of air through a test area in which an object is kept. This paper will focus primarily on the fabrication process of small scale subsonic wind tunnel, flow visualization analysis on an object and calculation of lift and drag coefficient of an object through experiment. In the present world of obtaining excellence with the most extreme cost sparing and almost all the aircrafts are composed utilizing CAD programming. These plans however should be checked and tried continuously which gives imperatives results in the full scale. The momentum research not just incorporates confirmation of withdrawal cone outline by looking at the speed of air at various segments got amid CFD investigation with the trial values at comparing forces. This design explains the whole method to plan an open circuit subsonic wind tunnel which will be utilized to concentrate on the wind impact on the diverse models of basic components. The plans were made and broke down, bringing about different examinations of various geometries, and giving the required information of course from the outlines. The profile includes a contraction cone area of side 750mm, square test area of side 500 mm, to suit the model and required instrumentation in it, for power and weight estimation. The test section has a dimension of 340mm x 360mm x 500mm which is companionable to the outlet and inlet of the nozzle and diffuser respectively with the mean velocity of 15 m/s. A straight portion before the test chamber is given to allow the yield of withdrawal zone to offset before it accomplishes the test section.