Receptivity and Growth of Two-and Three-Dimensional Disturbances in a Blasius Boundary Layer

  title={Receptivity and Growth of Two-and Three-Dimensional Disturbances in a Blasius Boundary Layer},
  author={Rudolph A. King},
In this experimental study, acoustic receptivity was examined for a Blasius boundary layer formed on a flat plate. Non-localized surface roughness, 2-D and oblique, were considered for various roughness heights and acoustic wave amplitudes. The receptivity sites (surface roughness) had a well defined wavenumber spectrum with a fundamental wavenumber of kw. A planar downstream-traveling acoustic wave was created to temporally excite the flow near the resonance frequency, ωts, of an unstable… CONTINUE READING


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