Steady-state and time-accurate two-dimensional solutions of the compressible Reynolds-averaged Navier- Stokes equations are obtained for flow over the Lockheed circulation control (CC) airfoil and the General Aviation CC (GACC) airfoil. Numerical issues in computing circulation control flows such as the effects of grid resolution, boundary and initial conditions, and unsteadiness are addressed. For the Lockheed CC airfoil computed solutions are compared with detailed experimental data, which include velocity and Reynolds stress profiles. Three turbulence models, having either one or two transport equations, are considered. Solutions are obtained on a sequence of meshes, with mesh refinement primarily concentrated on the airfoil circular trailing edge. Several effects related to mesh refinement are identified. For example, sometimes sufficient mesh resolution can exclude nonphysical solutions, which can occur in CC airfoil calculations. Also, sensitivities of the turbulence models with mesh refinement are discussed. In the case of the GACC airfoil the focus is on the difference between steady-state and time-accurate solutions. A specific objective is to determine if there is self-excited vortex shedding from the jet slot lip.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Numerical Issues for Circulation Control Calculations


    Beteiligte:

    Kongress:

    3rd AIAA Flow Control Conference ; 2006 ; San Francisco, CA, United States


    Erscheinungsdatum :

    2006-01-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Numerical Issues for Circulation Control Calculations

    Swanson, R. / Rumsey, C. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2006


    Numerical Issues for Circulation Control Calculations

    Swanson, R. / Rumsey, Christopher | AIAA | 2006



    Numerical Investigation of Circulation Control

    Friedman, C. / Arieli, R. / Levy, Y. | British Library Conference Proceedings | 2007


    Waterborne paint circulation issues

    Boyce,S.T. / Schilling,P. / Becker,E. et al. | Kraftfahrwesen | 1992