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Aerodynamic analysis of transonic manoeuvre devices using an unstructured-grid, Navier-Stokes flow solver

By LJ Johnston and Science & Engineering School of Computing

Abstract

The viscous, transonic flow development around the SKF 1.1 supercritical aerofoil section, in clean configuration and equipped with either a trailing-edge flap or a leading-edge slat, is computed using an unstructured-grid based flow solver for the Reynolds-averaged Navier-Stokes equations. A full differential Reynolds-stress turbulence model is employed in the computations to model the Reynolds stresses appearing in the mean-flow equations. The wall-function approach is adopted to bridge the molecular-viscosity dominated region immediately adjacent to solid boundaries. Predicted surface pressure distributions are compared with experimental data, for a free-stream Mach number of 0.6 and a range of incidence angles, and generally show a satisfactory level of agreement. There are some discrepancies in the region of the upper surface shock wave/boundary layer interactions that are probably partially due to uncertainties in the wind-tunnel wall interference corrections to be applied to the experimental data. However, the influence of the near-wall treatment in the computations also requires further investigation

Topics: TL, other
OAI identifier: oai:usir.salford.ac.uk:2663

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Citations

  1. (1974). An Inviscid Analysis of Transonic,
  2. (1995). An Overview of the Boeing 777 High Lift Aerodynamic Design',
  3. (1976). Analysis of Two-Element High Lift Systems in Transonic Flow’,
  4. (1992). Application of an Unstructured Navier-Stokes Solver to Multi-Element Airfoils Operating at Transonic Maneuver Conditions,
  5. (1996). Calculation of High-Lift Aerodynamics on Adaptive Unstructured Grids',
  6. (1986). Calculation of Inviscid Transonic Flow over a Complete Aircraft’,
  7. (1980). Flow Computation Around Multi-Element Airfoils in Viscous Transonic Flow',
  8. (2000). Fundamentals of Fighter Design’,
  9. (1975). High Lift Aerodynamics', doi
  10. (1995). High-Lift Navier-Stokes Computations on Unstructured Grids Using a Differential Reynolds Stress Model’, Numerical Methods for Fluid Dynamics V, Edited by K.W.
  11. (2002). Prediction of High Lift: Review of Present CFD Capability', doi
  12. (1993). Prediction of the High-Lift Performance of Multi-Element Aerofoils Using an Unstructured Navier-Stokes Solver',
  13. (1976). The Numerical Computation of the Transonic Flow over Two-Element Airfoil Systems’,
  14. (1977). The Viscous Transonic Flow over Two-Element Airfoil Systems’,
  15. (2007). Unstructured Grid Generation Method and Flow Solutions for TwoDimensional, High-Lift Aerofoil Configurations’,
  16. (1981). Viscous Flow Simulation of High Lift Devices at Subsonic and Transonic Speed’,
  17. (1993). Viscous Phenomena Affecting High-Lift Systems and Suggestions for Future CFD Development',

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