Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Use of Gamma Theta Model to Determine the Aerodynamic Characteristics of NACA 23012
Submission Author:
Aideé Barros , SC
Co-Authors:
Felipe Câmara, Sandi Souza, Aideé Barros
Presenter: Sandi Souza
doi://10.26678/ABCM.COBEM2017.COB17-2283
Abstract
In the flow around aerofoils, the laminar region may correspond to up to 30% of the flow. The regular models of RANS (Reynolds Averaged Navier-Stokes) like k-ε, k-ω, and SST are incapable of predict the laminar-turbulent transition accurately because they consider fully turbulent flow. The SST Gamma Theta model was created by Dr. Florian Menter and Dr. Robin Blair Langtry to identify the laminar region and the transition process. The objective of this work is to analyse the aerodynamic flow over NACA23012 aerofoil using numerical simulation with a SST Gamma Theta Model to identify the laminar region and the transition process. Some characteristics of the aerofoil, like pressure distribution and velocity were determined by using numerical simulation on the software Ansys CFX 15. The effect of transition on the characteristics of NACA 23012 was investigated. The simulation results were compared with experimental data of NACA Report N° 586 (Aerofoil Section Characteristics as Affected by Variations of The Reynolds Number) and showed good behavior of SST Gamma Theta Model.
Keywords
Numerical simulation, Trasition Model, Aerofoil
