TY - GEN
T1 - Application of the quadratic constitutive relation to various turbulence models in OpenFOAM
AU - Nagapetyan, Hakop J.
AU - Wray, Timothy J.
AU - Agarwal, Ramesh K.
N1 - Publisher Copyright:
© 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2016
Y1 - 2016
N2 - The goal of this paper is to analyze the accuracy of various eddy-viscosity turbulence models with the Quadratic Constitutive Relation (QCR) compared to the traditional linear Boussinesq relation used in modeling the turbulent stresses in computing vortical and mildly separated flows. QCR is added to the one-equation Spalart-Allmaras and Wray-Agarwal models, and the two-equation Shear-Stress-Transport k-ω model. OpenFOAM is used as the flow solver. These three models with the addition of QCR are employed to predict the subsonic flow past a flat-plate, flow in a 2D lid-driven cavity, subsonic flow over a backwards facing step, subsonic flow past an NACA 4412 airfoil and supersonic flow in a square duct. Numerical results using the linear Boussinesq relation and QCR for eddy viscosity are compared to the available experimental data. For several cases considered, the turbulence models utilizing QCR for eddy viscosity showed improved accuracy compared to the results from linear Boussinesq relation based eddy viscosity.
AB - The goal of this paper is to analyze the accuracy of various eddy-viscosity turbulence models with the Quadratic Constitutive Relation (QCR) compared to the traditional linear Boussinesq relation used in modeling the turbulent stresses in computing vortical and mildly separated flows. QCR is added to the one-equation Spalart-Allmaras and Wray-Agarwal models, and the two-equation Shear-Stress-Transport k-ω model. OpenFOAM is used as the flow solver. These three models with the addition of QCR are employed to predict the subsonic flow past a flat-plate, flow in a 2D lid-driven cavity, subsonic flow over a backwards facing step, subsonic flow past an NACA 4412 airfoil and supersonic flow in a square duct. Numerical results using the linear Boussinesq relation and QCR for eddy viscosity are compared to the available experimental data. For several cases considered, the turbulence models utilizing QCR for eddy viscosity showed improved accuracy compared to the results from linear Boussinesq relation based eddy viscosity.
UR - https://www.scopus.com/pages/publications/85088356927
U2 - 10.2514/6.2016-3476
DO - 10.2514/6.2016-3476
M3 - Conference contribution
AN - SCOPUS:85088356927
SN - 9781624104367
T3 - 46th AIAA Fluid Dynamics Conference
BT - 46th AIAA Fluid Dynamics Conference
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 46th AIAA Fluid Dynamics Conference, 2016
Y2 - 13 June 2016 through 17 June 2016
ER -