International Science and Technology Journal

The study of flow development has been carried out since the last century. It is very important in fluid engineering because of its numerous applications. The flow development depends on the geometry and dynamical parameters. In the present paper, an approach has been made for dealing with turbulent flows within multi-element airfoil. The[P1] turbulent flow around a multi-element airfoil using the wall y+ As a mentoring for a suitable grid configuration and corresponding turbulence models are investigated by using Fluent. This work was done under some assumption of constant viscosity, incompressible flow, and low Reynolds numbers. Spalart-Allmaras (SA), the standard k-ε, Reynolds stress model (RSM), and renormalization group (RNG) k-ε turbulence models are used to solve the closure problem . Their behaviors collectively with the accompanying near-wall treatments at different angles of attack are investigated for wall y+≈1 overlaying the viscous sublayer and Y+< 4 to 5 in the buffer region. The results show the maximum value of Y+ at these attack angles is almost Y+<5. This shows that the Fluent results were consistent. Therefore, the resolution of the near-wall grid is acceptable. Keywords: Turbulence Model, Computational Fluid Dynamic, Airfoil, Wall Y+≈1, NACA23012.