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

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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.

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Authors and Affiliations

  1. Department of Chemical Engineering, Chemical Process Engineering Research Institute University, Box 455, GR 540 06, Thessaloniki, Greece

    S. V. Paras & A. J. Karabelas

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  1. S. V. Paras
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  2. A. J. Karabelas
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Paras, S.V., Karabelas, A.J. Measurements of local velocities inside thin liquid films in horizontal two-phase flow. Experiments in Fluids 13, 190–198 (1992). https://doi.org/10.1007/BF00218166

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  • DOI: https://doi.org/10.1007/BF00218166

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