The electromagnetically forced flow over a backward-facing step


The electromagnetically forced flow over a backward-facing step

Weier, T.; Albrecht, T.; Gerbeth, G.; Metzkes, H.; Stiller, J.

The flow over a backward-facing step is a prototype of a separating and reattaching shear flow. Here we investigate the influence of time periodic electromagnetic forces on different flow features by time resolved Particle Image Velocimetry. As integral measure, the reattachment length is used, which shortens for increasing amplitude of the forcing. The maximum reduction of the rezirculation zone is found for an excitation frequency equal to the most amplified frequency of the separating shear layer.

Keywords: backward-facing step; flow control; Lorentz force

  • Open Access Logo Contribution to proceedings
    Seventh International Symposium On Turbulence and Shear Flow Phenomena (TSFP-7), 28.-31.07.2011, Ottawa, Kanada
    Proceedings of the 7th International Symposium On Turbulence and Shear Flow Phenomena (TSFP-7)
  • Poster
    Seventh International Symposium On Turbulence and Shear Flow Phenomena (TSFP-7), 28.-31.07.2011, Ottawa, Canada

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Publ.-Id: 14496