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Direct Numerical Simulation of Boundary Layer Transition in Streamwise Corner-Flow

In: High Performance Computing in Science and Engineering ‘13

Author

Listed:
  • Oliver Schmidt

    (University of Stuttgart, Institute of Aerodynamics and Gas Dynamics)

  • Björn Selent

    (University of Stuttgart, Institute of Aerodynamics and Gas Dynamics)

  • Ulrich Rist

    (University of Stuttgart, Institute of Aerodynamics and Gas Dynamics)

Abstract

The process of laminar-turbulent transition in streamwise corner-flow is considered my means of direct numerical simulation (DNS). It is shown that transition triggered by harmonic forcing originates from the near-corner region in the shape of a turbulent wedge. The resulting mean flow deformation takes the shape of an outward bulge, and can be linked to experimental observations. A spectral analysis of the transient flow data is undertaken to elaborate on non-linear interactions, modal structures and spectral energy distribution. Additionally, the massive parallel performance of the DNS code on the Cray XE6 supercomputer is discussed and compared with the performance on previous vector architectures.

Suggested Citation

  • Oliver Schmidt & Björn Selent & Ulrich Rist, 2013. "Direct Numerical Simulation of Boundary Layer Transition in Streamwise Corner-Flow," Springer Books, in: Wolfgang E. Nagel & Dietmar H. Kröner & Michael M. Resch (ed.), High Performance Computing in Science and Engineering ‘13, edition 127, pages 337-348, Springer.
    • Handle: RePEc:spr:sprchp:978-3-319-02165-2_23
    DOI: 10.1007/978-3-319-02165-2_23
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