Performance Evaluation of Two-Equation Turbulence Models for 3D Wing-Body Configuration

Title & Authors
Performance Evaluation of Two-Equation Turbulence Models for 3D Wing-Body Configuration
Kwak, Ein-Keun; Lee, Nam-Hun; Lee, Seung-Soo; Park, Sang-Il;

Abstract
Numerical simulations of 3D aircraft configurations are performed in order to understand the effects of turbulence models on the prediction of aircraft's aerodynamic characteristics. An in-house CFD code that solves 3D RANS equations and two-equation turbulence model equations are used. The code applies Roe's approximated Riemann solver and an AF-ADI scheme. Van Leer's MUSCL extrapolation with van Albada's limiter is also adopted. Various versions of Menter's $\small{k-{\omega}}$ SST turbulence models as well as Coakley's $\small{q-{\omega}}$ model are incorporated into the CFD code. Menter's $\small{k-{\omega}}$ SST models include the standard model, the 2003 model, the model incorporating the vorticity source term, and the model containing controlled decay. Turbulent flows over a wing are simulated in order to validate the turbulence models contained in the CFD code. The results from these simulations are then compared with computational results from the $\small{3^{rd}}$ AIAA CFD Drag Prediction Workshop. Numerical simulations of the DLR-F6 wing-body and wing-body-nacelle-pylon configurations are conducted and compared with computational results of the $\small{2^{nd}}$ AIAA CFD Drag Prediction Workshop. Aerodynamic characteristics as well as flow features are scrutinized with respect to the turbulence models. The results obtained from each simulation incorporating Menter's $\small{k-{\omega}}$ SST turbulence model variations are compared with one another.
Keywords
Computational fluid dynamics;Turbulence models;Aerodynamic characteristics of an aircraft;
Language
English
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