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Effects of Inflow Disturbances on Spatially-Evolving Instability in Plane Channel Flow

  • E. M. Saiki
  • S. Biringen
Conference paper
Part of the ICASE NASA LaRC Series book series (ICASE/NASA)

Abstract

A computational study examining the effects of varying inflow disturbance conditions on spatially evolving channel flow instability is presented. The inflow conditions consist of a 2-D perturbation wave coupled with a 3-D random noise field. The 2-D amplitude is varied in order to examine the resulting transition characteristics of the channel. At low 2-D amplitudes (A2d = 1.25%) H-type or subharmonic characteristics dominate while at higher amplitudes (A2d = 2.5% and 3.25%) mixed H-and K-type instabilities occur.

Keywords

Critical Layer Secondary Instability Outflow Boundary Condition Plane Poiseuille Flow Spanwise Location 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag New York, Inc. 1992

Authors and Affiliations

  • E. M. Saiki
    • 1
  • S. Biringen
    • 1
  1. 1.University of ColoradoBoulderUSA

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