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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
STATISTICS OF TURBULENT FLOWS COMPUTED BY LARGE EDDY SIMULATIONS OF A NACA0012 AIRFOIL
Submission Author:
Gabriel Nogueira , SP
Co-Authors:
Gabriel Nogueira, Tulio Rodarte Ricciardi, William Wolf
Presenter: Gabriel Nogueira
doi://10.26678/ABCM.ENCIT2020.CIT20-0175
Abstract
The study of turbulent flows over airfoil profiles finds application in aeronautical and wind energy research where drag and noise reduction are sought. In this work, we combine wall-resolved large eddy simulations with statistical post-processing tools to provide a better understanding of physical processes related to turbulent flows in the presence of walls with adverse pressure gradient variations. An investigation of the mechanisms of production, advection, diffusion, transport and dissipation is provided through analysis of turbulent kinetic energy (TKE) budgets. Turbulence anisotropy effects are studied using the scatter plots of velocity components and probability density functions. The impact of mesh refinement on the convergence of statistics is also verified. Moreover, different tripping configurations are analyzed to assess their impact on the boundary layers.
Keywords
Large Eddy Simulation (LES), Turbulent flow, Aerodynamics, anisotropy, Turbulent kinetic energy
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