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Evolution of a confined turbulent jet in a long cylindrical cavity: Homogeneous fluids

The flow induced in a long cylinder by an axially discharging round turbulent jet was investigated experimentally with applications to crude oil storage in the U.S. strategic petroleum reserves (SPR). It was found that the flow does not reach a true steady state, but vacillates periodically. Digital video recordings and particle imagevelocimetry were used to map the flow structures and velocity/vorticity fields, from which the frequency of jet switching, jet stopping distance, mean flow,turbulence characteristics, and the influence of end-wall boundary conditions were inferred. The results were parameterized using the characteristic length D and velocity J 1/2 /D scales based on the jet kinematic momentum flux J and cylinder width D. The scaling laws so developed could be used to extrapolate laboratory observations to SPR flows

© Physics of Fluids, 2011, vol. 23, p. 115106

American Institute of Physics

Autor: Voropayev, S.I.
Sánchez Martín, Xavier
Nath, C.
Webb, S.
Fernando, Harindra Joseph S.
Data: 2011
Resum: The flow induced in a long cylinder by an axially discharging round turbulent jet was investigated experimentally with applications to crude oil storage in the U.S. strategic petroleum reserves (SPR). It was found that the flow does not reach a true steady state, but vacillates periodically. Digital video recordings and particle imagevelocimetry were used to map the flow structures and velocity/vorticity fields, from which the frequency of jet switching, jet stopping distance, mean flow,turbulence characteristics, and the influence of end-wall boundary conditions were inferred. The results were parameterized using the characteristic length D and velocity J 1/2 /D scales based on the jet kinematic momentum flux J and cylinder width D. The scaling laws so developed could be used to extrapolate laboratory observations to SPR flows
Format: application/pdf
ISSN: 1070-6631 (versió paper)
1089-7666 (versió electrònica)
Accés al document: http://hdl.handle.net/10256/8467
Llenguatge: eng
Editor: American Institute of Physics
Col·lecció: Reproducció digital del document publicat a: http://dx.doi.org/10.1063/1.3662442
Articles publicats (D-F)
És part de: © Physics of Fluids, 2011, vol. 23, p. 115106
Drets: Tots els drets reservats
Matèria: Turbulència
Turbulence
Dinàmica de fluids
Fluid dynamics
Títol: Evolution of a confined turbulent jet in a long cylindrical cavity: Homogeneous fluids
Tipus: info:eu-repo/semantics/article
Repositori: DUGiDocs

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