Effect of Adverse Pressure Gradient on a Fluctuating Velocity over the Co-Flow Jet Airfoil
Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 33035
Effect of Adverse Pressure Gradient on a Fluctuating Velocity over the Co-Flow Jet Airfoil

Authors: Morteza Mirhosseini, Amir B. Khoshnevis

Abstract:

The boundary layer separation and new active flow control of a NACA 0025 airfoil were studied experimentally. This new flow control is sometimes known as a co-flow jet (cfj) airfoil. This paper presents the fluctuating velocity in a wall jet over the co-flow jet airfoil subjected to an adverse pressure gradient and a curved surface. In these results, the fluctuating velocity at the inner part increasing by increased the angle of attack up to 12o and this has due to the jet energized, while the angle of attack 20o has different. The airfoil cord based Reynolds number has 105.

Keywords: Adverse pressure gradient, fluctuating velocity, wall jet, co-flow jet airfoil.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1338742

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1461

References:


[1] T. J. Mueller, and S. M. Batill. Experimental studies of separation on a two-dimensional airfoil at low Reynolds numbers. AIAA Journal 20: 457–464, 1982.
[2] G.-C. Zha, B. Carroll, C. Paxton, A. Conley, and A. Wells. High performance airfoil with co-flow jet flow control. AIAA Journal 45: 77–105, 2007.
[3] G.-C. Zha, and W. Gao, “Analysis of Jet Effects on Co-Flow Jet Airfoil Performance with Integrated Propulsion System,” AIAA Paper 2006-102, 2006.
[4] Yarusevych, S., Sullivan, P. E., and Kawall, J. G., “Investigation of Airfoil Boundary Layer and Wake Development at Low Reynolds Numbers,” AIAA Paper 2004-2551, 2004.
[5] S. B. Pope, Turbulent Flows, Cambridge Univ. Press, Cambridge, England, 2000.
[6] T. Regert, L. Nagy, M. Balczo, and B. Molnar, “Investigation of the Characteristics of Turbulent Boundary Layer Over an Airfoil,” 6th Conference on Modelling Fluid Flow, 6-9 Sep, 2006.
[7] J.-H. Lee, H. J. Sung,”Effect of an adverse pressure gradient on a turbulent boundary layer,” International Journal of Heat and Fluid Flow, vol. 29, pp. 568-578. 2008.