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Experiments in Fluids

, Volume 13, Issue 2–3, pp 190–198 | Cite as

Measurements of local velocities inside thin liquid films in horizontal two-phase flow

  • S. V. Paras
  • A. J. Karabelas
Originals

Abstract

A new experimental facility based on Laser Doppler anemometry permits accurate local measurements in a horizontal pipe. Measurements of the axial velocity component in the liquid layer of the atomization/stratified flow regime are reported. The new information includes time-averaged local velocities, RMS values, probability density distributions, and power spectra. Elimination of velocity bias and calculation of velocity spectra is accomplished by a recently developed “signal reconstruction” algorithm. The data suggest that only in the vicinity of the solid surface (sublayer) does the liquid motion resemble the well-known behavior of single phase flow. Beyond that, the flow field is strongly influenced by the wavy gas/liquid interface and by the apparently intensive energy transfer from the very fast moving gas to the liquid layer.

Keywords

Flow Regime Liquid Film Axial Velocity Liquid Layer Phase Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • S. V. Paras
    • 1
  • A. J. Karabelas
    • 1
  1. 1.Department of Chemical EngineeringChemical Process Engineering Research Institute UniversityThessalonikiGreece

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