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Pressure fluctuations in swirling turbulent flows

Abstract : We report measurements of pressure fluctuations in swirling turbulent flows generated in the gap between two rotating coaxial disks. We relate the pressure spectra to the observed flow regimes in the case of co-rotating and counter-rotating disks. In the latter case, we show that the pressure probability density function is strongly non-Gaussian and displays an exponential tail toward low pressures which might be ascribed to intermittent vorticity concentrated on tube-like structures. Similarly, the behavior of the high pressure fluctuations results from the geometry of dissipative structures.
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https://hal.archives-ouvertes.fr/jpa-00247830
Contributor : Archives Journal de Physique Connect in order to contact the contributor
Submitted on : Friday, January 1, 1993 - 8:00:00 AM
Last modification on : Friday, January 1, 1993 - 8:00:00 AM
Long-term archiving on: : Tuesday, May 11, 2010 - 5:56:28 PM

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ajp-jp2v3p271.pdf
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S. Fauve, C. Laroche, B. Castaing. Pressure fluctuations in swirling turbulent flows. Journal de Physique II, EDP Sciences, 1993, 3 (3), pp.271-278. ⟨10.1051/jp2:1993129⟩. ⟨jpa-00247830⟩

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