In an attempt to determine the optimum geometric configuration of the slot, a series of computational parametric studies were performed, in which three of the geometric properties were independently varied, and lift and drag coefficients were calculated. The variables of interest for these simulations were the first-leg relative length percentage (*L*_{1}/*c*), slot width *w* (which was always kept identical between the first and second legs of the slot), and the deflection angle of the second leg with respect to the first-leg, *β*_{2}. The results of the 14 configurations examined are outlined in Fig. 5. The values of the variables treated as constant in each series of simulations are indicated above the corresponding columns. Note in all of the cases in this section, the slot first-leg angle *β*_{1} is set to zero and *h*/*c* = 4%. From Fig. 5(a), it is evident that all the simulation cases outperform the solid airfoil case regarding the lift coefficient. This improvement can be as high as 65% for the best case. At a fixed exit angle and slot width, it is shown that lift coefficient increases with *L*_{1}. Meanwhile, one can note from Fig. 5(b) that *C*_{D} decreases as *L*_{1} increases. From the second set of simulations in Figs. 5(a) and 5(b), it is found that unlike the slot length, the exit angle *β*_{2} does not play a significant role in determination of the lift. However, slots with smaller *β*_{2} result in lower drag forces. Therefore, this angle is recommended to remain small in future investigations. Finally, from the third set of simulations (*L*_{1}/*c* = 70% and *β*_{2} = 45 deg), it is found that wider slots will result in slightly higher lift, but also much higher drag as compared to the narrower slots. Therefore, it is recommended to keep the slot width as small as practically possible. In summary, even though all of the chosen cases result in an improved lift, there seems to be an inevitable drag penalty. If one's objective is only to maximize the lift, the fifth case (*β*_{2} = 85 deg, *w* = 2 cm, and *L*_{1}/*c* = 90%) seems to be the optimum solution. However, if the drag has to be taken into account, the 11th case (*β*_{2} = 45 deg, *w* = 0.5 cm, and *L*_{1}/*c* = 70%) seems more appropriate *for the cases studied*. Overall, one can conclude that it is better to keep *L*_{1} as large as possible, while keep *w* and *β*_{2} as small as possible.