A vortex-lattice technique is developed to model unsteady, incompressible flow past thin wings. This technique predicts the shape of the wake as a function of time; thus, it is not restricted by planform, aspect ratio, or angle of attack as long as vortex bursting does not occur and the flow does not separate from the wing surface. Moreover, the technique can be applied to wings of arbitrary curvature undergoing general motion; thus, it can treat rigid-body motion, arbitrary wing deformation, gusts in the freestream, and periodic motions. Numerical results are presented for low-aspect rectangular wings undergoing a constant-rate, rigid-body rotation about the trailing edge. The results for the unsteady motion are compared with those predicted by assuming quasi-steady motion. The present results exhibit hysteretic behavior.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Unsteady flow past wings having sharp-edge separation


    Contributors:
    Atta, E. H. (author) / Kandil, O. A. (author) / Mook, D. T. (author) / Nayfeh, A. H. (author)


    Publication date :

    1976-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Flow Control of Sharp-Edged Wings via Unsteady Blowing

    Rullan, J. / Vlachos, P. P. / Telionis, D. P. et al. | British Library Conference Proceedings | 2004


    Post-Stall Flow Control of Sharp-Edged Wings via Unsteady Blowing

    Jose Rullan / Pavlos Vlachos / Demetri Telionis et al. | AIAA | 2006


    Post-Stall Flow Control of Sharp-Edged Wings via Unsteady Blowing

    Rullan, Jose / Vlachos, Pavlos / Telionis, Demetri et al. | AIAA | 2004


    Post-Stall Flow Control of Sharp-Edged Wings via Unsteady Blowing

    Rullan, J. / Vlachos, P. P. / Telionis, D. P. et al. | British Library Conference Proceedings | 2003


    Post-Stall Flow Control of Sharp-Edged Wings via Unsteady Blowing

    Rullan, Jose / Vlachos, Pavlos / Telionis, Demetri et al. | AIAA | 2003