The density-based algorithms are generally used to solve high speed flows; acuuracy of these methods degrades in low-speed limit i.e. in incompressible limit due to large value of the condition number. Popular method to fix this issue is use of the preconditioning methods. Preconditioning not only maintains the accuracy in low Mach limit but also helps in accelerating the convergence by altering the characteristic speeds, which results in destructions of the time accuracy. Whereas new parameter free scheme has been suggested by Shima which solves the problem without destroying the time-accuracy. In this paper we investigate the SLAU scheme of of Shima in incompressible limit for practical applications such as aerofoils at angle of attack using our in-house developed 3-D unstructured hybrid code. © 2018 by the authors of the abstracts.