Airfoil Passive Flow Control Using Internal Slot

I have been studying the influence of internal slot on NACA 0018 airfoil's aerodynamic characteristics. For this investigation I have been using Ansys Fluent. I have been studying different configuration of internal slot. All this simulations were done at 0.6 mach. I have used Spalart Allmaras turbulence model. I have been comparing the result of this analysis with the result obtained from unmodified NACA 0018 airfoil. It shows that at higher angle of attack lift gets increased in case of airfoil with internal slot.

Figure: Closer Look of the mesh

Figure: Velocity Contour Of NACA 0018 airfoil with internal slot at 18 degree angle of attack

Figure: Lift Coefficient Vs AOA plot

This a brief discussion of this study. I have been doing this by myself for a while. I have been studying some more configuration of passive flow control techniques. I am trying to go deeper and develop my understanding to handle this kind of CFD projects more smoothly.