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3-D-Boundary-Layer Transition Induced by Superposed Steady and Traveling Crossflow Vortices

In: High Performance Computing in Science and Engineering ’02

Author

Listed:
  • G. Bonfigli

    (Universität Stuttgart, Institut für Aerodynamik und Gasdynamik)

  • M. Kloker

    (Universität Stuttgart, Institut für Aerodynamik und Gasdynamik)

  • S. Wagner

    (Universität Stuttgart, Institut für Aerodynamik und Gasdynamik)

Abstract

Crossflow-induced laminar-turbulent transition and the initial stages of turbulence are investigated by means of spatial direct numerical simulations for the accelerating 3-D flat-plate boundary layer of the “Querströmungsprinzipexperiment” of the DLR-Göttingen [1]. The complete 3-D incompressible Navier-Stokes equations are solved marching in time on the basis of a 4th-order Runge-Kutta scheme. Fourier spectral expansions and 6th-order compact finite differences are used for discretization in space. In accordance with the experiment, both steady and traveling crossflow modes are excited. Attention is focused on the non-linear interaction between vortical structures generated by the primary instabilities. The growth of high-frequency secondary instabilities is also observed. Classical turbulent quantities are evaluated for the region downstream of the laminar breakdown.

Suggested Citation

  • G. Bonfigli & M. Kloker & S. Wagner, 2003. "3-D-Boundary-Layer Transition Induced by Superposed Steady and Traveling Crossflow Vortices," Springer Books, in: Egon Krause & Willi Jäger (ed.), High Performance Computing in Science and Engineering ’02, pages 255-271, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-59354-3_21
    DOI: 10.1007/978-3-642-59354-3_21
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