Eventos Anais de eventos
EPTT 2024
14th Spring School on Transition and Turbulence
A Study of Explicit Algebraic Reynolds Stress Models Applied to Aerodynamic Flows
Submission Author:
Thamires das Chagas Silva , SP , Brazil
Co-Authors:
Thamires das Chagas Silva, João Luiz F. Azevedo
Presenter: Thamires das Chagas Silva
doi://10.26678/ABCM.EPTT2024.EPT24-0013
Abstract
This work is part of an ongoing effort to assess the capabilities of nonlinear eddy-viscosity turbulence models to simulate turbulent flows around aeronautical configurations. Nonlinear eddy-viscosity tur- bulence models are an intermediate class of turbulence models appropriate to work with the Reynolds- averaged Navier-Stokes (RANS) equations. Explicit algebraic Reynolds stress models (EARSMs) are inside this class of turbulence closures. The main advantage of the nonlinear eddy-viscosity turbu- lence models is the capability to predict the flow more accurately at the same time that keeping the computational cost similar to linear eddy-viscosity turbulence models, which are currently the most used by the aeronautical industry. Two EARSMs are employed here, coupled with the 3-D RANS equations. This theoretical formulation is solved in a cell-centered, finite volume method using un- structured meshes. The main applications of interest are flows over high-lift and cruise configurations. Up to now, the test cases include the subsonic flow over the zero pressure gradient flat plate and the transonic flow over the OAT15A airfoil. Other cases of interest in aeronautical engineering are being studied and they will also be included in the final paper.
Keywords
Computational Fluid Dynamic (CFD), Reynolds Averaged Navier-Stokes, Nonlinear Eddy-Viscosity Turbulence Models, Explicit Algebraic Reynolds Stress Models, turbulence modeling
