Grid and Turbulence Model-based Exhaustive Analysis of NACA 0012 Airfoil

Authors

  • Sriram Krishnaswamy Department of Mechanical Engineering, BITS Pilani, Hyderabad Campus, India
  • Shubham Jain Department of Aerospace Engineering, PEC University of Technology, Chandigarh, India
  • N Sitaram Department of Mechanical Engineering, IIT Madras, India

Keywords:

CFD, turbulence model, grid, lift coefficient, drag coefficient

Abstract

Steady state, two dimensional numerical investigations are performed on NACA 0012 airfoil to analyze the performance of five different RANS-based turbulence models on four different density grids in terms of aerodynamic characteristics of airfoils at a Reynolds Number of 3 × 106. 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 are used to plot CP, CL and CD vs. AoA. The best results are obtained with a grid consisting of 200,000 nodes and k-e RNG turbulence model. Also, good results were obtained from the k-e Realizable model and k-w SST model.

References

[1] Rumsey Christopher L, Ying Susan X. Prediction of high lift: Review of present CFD capability.Progress of Aerospace Sciences: 38, 145-80p,2002.
[2] Jens Trapp.NACA 4-digit Airfoil Generator. Java page.
[3] ANSYS.ANSYS 14 User’s Guide. 2011.
[4] Abbott Ira H, von Doenhoff, Albert E.Theory of Wing Sections. 1949.
[5] ANSYS.ANSYS FLUENT Theory Guide. 2011.
[6] NASA Langley Research Center, 2D NACA 0012 Airfoil validation.Report 2013.

Published

2019-01-04

Issue

Vol. 1 No. 1 (2014): Journal of Advanced Research in Applied Mechanics & Computational Fluid Dynamics

Section

Articles