Statistics – Computation
Scientific paper
Dec 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jfm...149..161g&link_type=abstract
Journal of Fluid Mechanics (ISSN 0022-1120), vol. 149, Dec. 1984, p. 161-177.
Statistics
Computation
2
Nonuniform Flow, Shear Layers, Sound Generators, Subsonic Flow, Wave Interaction, Computational Fluid Dynamics, Far Fields, Ideal Gas, Incompressible Flow, Inviscid Flow, Near Fields, Nozzle Flow, Turbulent Mixing, Upstream
Scientific paper
Attention is given to the sound produced by artificially excited, spatially growing instability waves on subsonic shear layers. Real flows that always diverge in the downstream direction allow sound to be produced by the interaction of the instability waves with the resulting streamwise variations of the flow. The upstream influence, or feedback, can interact with the splitter plate lip to produce a downstream-propagating instability wave that may under certain conditions be the same instability wave that originally generated the upstream influence. The present treatment is restricted to very low Mach number flows, so that compressibility effects can only become important over large distances.
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