• Harsh Mathur
• Adithya Narayanan

High angle of attack (α) conditions coupled with low relative airflow velocities result in sudden losses of upthrust, a fatal outcome of the induced turbulent flow. This project aims to closely study the separated flow over a wing section using a low cost method: observations were conducted in a self-fabricated open-circuit wind tunnel. A modified nozzle-jet over the wing surface tangentially blew over the surface to counter the destabilisation of the boundary layer. First, the conditions under which the separation of flow was visible in the effective chord length of the airfoil were noted. These conditions were controlled across the NACA 2412 airfoil and wind tunnel testing environment variables. The countering mechanism for the separation was activated under the same controlled parameters to test the effectiveness of the method. The experimental verification draws plots from direct imagery captured from the windtunnel trials. Images of the opaque gas stream (airflow visualiser in the test section) of high α conditions were captured. Greyscale renders of the images highlighting the precise paths of the fluid were produced. We compared the two fluid distribution greyscales by plotting their positions on a 2D xy-plane. The cost effective method was able to demonstrate the effectiveness of the nozzle-jets.

Low-cost method qualitatively verifying the role of blowing jets in improving airflow across airfoils experiencing flow separation

"Low-cost method qualitatively verifying the role of blowing jets in improving airflow across airfoils experiencing flow separation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 12, page no.d48-d53, December-2021, Available :http://www.jetir.org/papers/JETIR2112307.pdf

"Low-cost method qualitatively verifying the role of blowing jets in improving airflow across airfoils experiencing flow separation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 12, page no. ppd48-d53, December-2021, Available at : http://www.jetir.org/papers/JETIR2112307.pdf