Direct observation of the intermittency of intense vorticity filaments in turbulence

Details Direct observation of the intermittency of intense vorticity filaments in turbulence Direct observation of the intermittency of intense vorticity filaments in turbulence

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvl..67..983d&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 67, Aug. 19, 1991, p. 983-986.

Physics

208

Cavitation Flow, Three Dimensional Flow, Turbulent Flow, Two Phase Flow, Vorticity, Energy Spectra, Flow Geometry, Flow Visualization, Kolmogoroff Theory, Recirculative Fluid Flow

Scientific paper

Cavitation in a liquid seeded with bubbles is used as a new visualization technique to single out the regions of very low pressure of a fully developed turbulent flow. By this means, the sudden appearance of high vorticity filaments is observed. These structures are very thin and short lived and display a high degree of temporal as well as spatial intermittency. They contribute to the flow organization: in particular, their disintegration corresponds to the formation of large eddies.

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