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Wall shear stress around a stationary gas slug in a downward liquid flow

Wall shear stress around a stationary gas slug in a downward liquid flow A single cell of the gas-liquid slug flow was studied. The flow around an immobile gas slug in a downflow of liquid and under its bottom was measured. The values of the wall shear stress and its pulsations were measured by the electrodiffusion method depending on a distance from the slug nose. It is shown that in a liquid film around a slug, turbulent pulsations are damped in comparison with a single-phase liquid flow. In the bottom part of a slug, where vortices are detached, turbulent pulsations exceed significantly the single-phase ones. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Thermophysics and Aeromechanics Springer Journals

Wall shear stress around a stationary gas slug in a downward liquid flow

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Publisher
Springer Journals
Copyright
Copyright © Pleiades Publishing, Ltd. 2008
ISSN
0869-8643
eISSN
1531-8699
DOI
10.1134/s0869864308010071
Publisher site
See Article on Publisher Site

Abstract

A single cell of the gas-liquid slug flow was studied. The flow around an immobile gas slug in a downflow of liquid and under its bottom was measured. The values of the wall shear stress and its pulsations were measured by the electrodiffusion method depending on a distance from the slug nose. It is shown that in a liquid film around a slug, turbulent pulsations are damped in comparison with a single-phase liquid flow. In the bottom part of a slug, where vortices are detached, turbulent pulsations exceed significantly the single-phase ones.

Journal

Thermophysics and Aeromechanics – Springer Journals

Published: Mar 1, 2008

Keywords: Wall Shear Stress; Slug Flow; Turbulent Pulsation; Taylor Bubble; Liquid Plug

References

  • Two-phase flow in vertical tubes
    Nicklin, D.J.; Wilkes, M.A.; Davidson, J.F.
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    Van Hout, R.; Barnea, D.; Shemer, L.
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    Shemer, L.; Barnea, D.
  • Simultaneous PIV and pulsed shadow technique in slug flow: a solution for optical problems
    Nogweira, S.; Sousa, R.G.; Pinto, A.M.F.R.; Riethmuller, M.L.; Campos, J.B.L.M.
  • Hydrodynamic and statistical parameters of slug flow
    Shemer, L.
  • Experimental study of gas-liquid slug flow in small diameter vertical pipe
    Nakoryakov, V.E.; Kashinsky, O.N.; Kozmenko, B.K.
  • Study of local hydrodynamic characteristics of upward slug flow
    Nakoryakov, V.E.; Kashinsky, O.N.; Petukhov, A.V.; Gorelik, R.S.
  • The structure of an upward slug flow in a vertical tube
    Kashinsky, O.N.; Randin, V.V.; Kurdyumov, A.S.
  • Measurement of air-entrainment from a stationary Taylor bubble in a vertical tube
    Delfos, R.; Wisse, C.J.; Oliemans, R.V.A.
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    Kashinsky, O.N.; Randin, V.V.; Lobanov, P.D.; Bogoslovtsev, G.V.
  • Wall shear stress in an upward slug flow in a vertical tube
    Kashinsky, O.N.; Kurdyumov, A.S.; Randin, V.V.