GRID AND TURBULENCE MODEL BASED EXHAUSTIVE ANALYSIS OF NACA 0012 AIRFOIL

Steady state, two dimensional numerical investigations are performed on NACA 0012 airfoil to analyze the performance of 5 different RANS based turbulence models on 4 different density grids in terms of aerodynamic characteristics of airfoils at a Reynolds Number of 3x106. The purpose of this study is to choose the most accurate turbulence model which will be used to determine the effect of Gurney Flap and Synthetic Jet on airfoils in near future. Data obtained from this exhaustive series of numerical investigation with the help of FLUENT is used to plot CP, CL and CD vs. AoA. The best results are obtained with a grid consisting of 2,00,000 nodes and the k-e RNG turbulence model. Also, good results were obtained from the k-e Realizable model and k-w SST model.