ARTICLE
Analysis of co-flow jet effects on airfoil at moderate Reynolds numbers
 
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1
Hakim Sabzevari University, Department of Mechanical Engineering, Sabzevar, Iran
 
2
Quchan University of Technology, Department of Mechanical Engineering, Quchan, Iran
 
 
Submission date: 2019-09-04
 
 
Final revision date: 2019-12-03
 
 
Acceptance date: 2019-12-06
 
 
Online publication date: 2020-07-15
 
 
Publication date: 2020-07-15
 
 
Journal of Theoretical and Applied Mechanics 2020;58(3):685-695
 
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ABSTRACT
This paper investigates the performance of controlling Co-Flow Jet (CFJ) on NACA 0025 airfoil at five different Reynolds numbers of 5 · 104, 7.5 · 104, 105, 1.5 · 105, and 3 · 105. To conduct the numerical solution of the fluid flow, 2D incompressible and unsteady Reynolds- -averaged Navier-Stokes equations are solved using the SST-k-ω turbulence model. At all investigated Reynolds numbers, the lift coefficient enhances as the momentum coefficient increases, and its best performance is obtained at an angle of attack of (AoA) 15. It is also observed that using the CFJ is of greater importance at Re ≤ 105 than in other investigated cases.
 
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