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- Title
Simultaneous Effect of Suction and Cavity for Controlling Flow Separation on NACA 0012 Airfoil -- CFD Approach.
- Authors
FATAHIAN, Esmaeel; FATAHIAN, Hossein
- Abstract
In the present research, a Computational Fluid Dynamics (CFD) investigation is carried out for analyzing the simultaneous effect of suction and cavity for controlling flow separation on NACA 0012 airfoil. Hence, a perpendicular suction jet (ϴjet = -90°) is employed with Rjet equal to 0.15 at Ljet = 0.1c. Simultaneously, a cavity is used at 90% of chord length (0.9c) with 20 mm width and 10 mm depth. The fluid flow is assumed to be 2D turbulent, and incompressible. The results demonstrate that lift coefficient has raised by 30% and drag coefficient has decreased by 40% at α = 14° by using simultaneous suction and cavity. The flow control method improves lift to drag ratio and stall angle has increased from 14° to 22°. Consequently, the flow separation has been delayed, the recirculation zone has gone downstream and completely eliminated by utilizing simultaneous suction and cavity as an effective flow control method.
- Subjects
FLOW separation; COMPUTATIONAL fluid dynamics; AEROFOILS; DRAG coefficient; FLUID flow
- Publication
Gazi University Journal of Science, 2021, Vol 34, Issue 1, p235
- ISSN
1303-9709
- Publication type
Article
- DOI
10.35378/gujs.706052