1Department of Automotive and Aeronautical Engineering, Faculty of Engineering and Technology, Ramaiah University of Applied Sciences, Bengaluru-560 058
2Formerly, National Aerospace Laboratories, Bengaluru-560 017
*Contact Author e-mail: sivapragasam.aae.et@msruas.ac.in
Online published on 18 February, 2020.
The flow field behind a complex distortion screen is investigated numerically and experimentally. The distortion screen was designed using an existing design procedure, and was fabricated by water-jet cut technique. The distorted total pressure field behind the screen was quantified by a Distortion Index parameter, which was evaluated from computations and experiments for several values of inlet Mach number. The root-mean-square error between the target total pressure values at the Aerodynamic Interface Plane and that achieved by the screen design was 4.75%. A detailed interpretation of the distorted total pressure field is made by means of defining a total pressure flux existing behind the screen. It is seen that the circumferential vorticity is a major contributing factor to the total pressure flux.
Total Pressure Distortion, Distortion Screen, Distortion Index, Total Pressure Flux
