High-Lift Aerodynamic Computations with One- and Two-Equation Turbulence Models

The Spalart-Allmaras one-equation turbulence model and the Menter two-equation turbulence model are assessed for Navier-Stokes computations of high-lift aerodynamic flows, including cases with significant regions of separated flow. Cases considered include 1) separated flow over a single-element airfoil at high lift, 2) fully attached flows over the NLR 7301 airfoil and flap, and 3) separated flow over the GA(W)-1 airfoil and flap. For the single-element case, the Menter model provides better agreement with the experimental pressure distribution and velocity profiles. For the NLR 7301 airfoil and flap, both turbulence models provide excellent agreement with experimental pressures and skin-friction data. Velocity profiles are generally well predicted except in some parts of wakes. Turbulent shear stresses are not always well predicted. The predictions of the Spalart-Allmaras model are generally superior for this case, especially when boundary-layer confluence is important.

[1]  P. Spalart.  A One-Equation Turbulence Model for Aerodynamic Flows , 1992 .

[2]  D. Zingg,et al.  Turbulent flow measurements with a triple-split hot-film probe , 1994 .

[3]  Dimitri J. Mavriplis,et al.  Navier-stokes applications to high-lift airfoil analysis , 1995 .

[4]  David W. Zingg,et al.  Multi-element airfoil computations with one-equation turbulence models , 1995 .

[5]  F. Menter.  Improved two-equation k-omega turbulence models for aerodynamic flows , 1992 .

[6]  T. Barth,et al.  A one-equation turbulence transport model for high Reynolds number wall-bounded flows , 1990 .

[7]  D. A. Johnson,et al.  A MATHEMATICALLY SIMPLE TURBULENCE CLOSURE MODEL FOR ATTACHED AND SEPARATED TURBULENT BOUNDARY LAYERS , 1985 .

[8]  Christopher L. Rumsey,et al.  Assessment of two-equation turbulence models for transonic flows , 1994 .

[9]  W. K. Anderson,et al.  Navier-Stokes Computations and Experimental Comparisons for Multielement Airfoil Configurations , 1993 .

[10]  Stuart E. Rogers,et al.  Progress in high-lift aerodynamic calculations , 1993 .

[11]  J. A. Braden,et al.  Experimental study of the separating confluent boundary-layer. Volume 2: Experimental data. Appendices A-E: Data supplement , 1983 .

[12]  Stuart E. Rogers,et al.  A comparison of turbulence models in computing multi-element airfoil flows , 1994 .

[13]  S. Rogers,et al.  Efficient Simulation of Incompressible Viscous Flow over Single and Multielement Airfoils , 1993 .

[14]  Pieter G. Buning,et al.  A comparative study of turbulence models for overset grids , 1992 .

[15]  Stuart E. Rogers,et al.  Efficient simulation of incompressible viscous flow over single and multi-element airfoils , 1992 .

[16]  Terry L. Holst,et al.  Viscous transonic airfoil workshop compendium of results , 1988 .

[17]  Eiji Shima,et al.  Navier-Stokes computation of a high lift system using Spalart-Allmaras turbulence model , 1994 .

[18]  H. Lomax,et al.  Thin-layer approximation and algebraic model for separated turbulent flows , 1978 .

[19]  T. Pulliam.  Efficient solution methods for the Navier-Stokes equations , 1986 .

[20]  F. Menter.  ZONAL TWO EQUATION k-w TURBULENCE MODELS FOR AERODYNAMIC FLOWS , 1993 .

[21]  D. W. Zingg,et al.  Compressible Navier-Stokes computations of multielement airfoil flows using multiblock grids , 1994 .