%0 Journal Article
%T Control of Laminar Separation Bubble over a NACA2415 Aerofoil at Low Re Transitional Flow Using Blowing/Suction
%J International Conference on Aerospace Sciences and Aviation Technology
%I The Military Technical College
%Z 2090-0678
%A GENÇ, M. Serdar
%A KAYNAK, Ünver
%D 2009
%\ 05/01/2009
%V 13
%N AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT- 13, May 26 – 28, 2009
%P 1-17
%! Control of Laminar Separation Bubble over a NACA2415 Aerofoil at Low Re Transitional Flow Using Blowing/Suction
%K Laminar separation bubble
%K Flow separation control
%K Blowing
%K Suction
%K Transition models
%R 10.21608/asat.2009.23439
%X In this study, control of flow over a NACA2415 aerofoil which experiences a laminar separation bubble at a transitional Reynolds number of 2x105 is computationally investigated using blowing or suction. In an earlier flow control study which involved the use of a leading edge slat, both the experimental and computational studies demonstrated significantly delayed stall angles. For these flows, employing the recently developed k-kL-ω and k-ω SST transition models were shown to accurately predict the location of the experimentally determined separation bubble. In the present case, a single jet with a width of 2.5% the chord length is placed on the aerofoil’s upper surface simulating the blowing/suction control at Re=2x105 and α = 8 degrees. Nearly 200 numerical simulations are carried out a range of parameters of jet locations, Ljet, jet velocity ratios, Rjet and jet angles, θjet are investigated. In the numerical results of blowing/suction, it is shown that the smaller blowing results are better larger blowing velocity ratios while the largest suction results are bettersmaller suction velocity ratios independent of the suction jet locations.
%U https://asat.journals.ekb.eg/article_23439_d8a3ddb5b716b15feb86866ba9edf4cd.pdf