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Experiments in Fluids

, 55:1859 | Cite as

Multi-layer film flow down an inclined plane: experimental investigation

  • D. Henry
  • J. Uddin
  • J. Thompson
  • M. G. Blyth
  • S. T. Thoroddsen
  • J. O. Marston
Research Article

Abstract

We report the results from an experimental study of the flow of a film down an inclined plane where the film itself is comprised of up to three layers of different liquids. By measuring the total film thickness for a broad range of parameters including flow rates and liquid physical properties, we provide a thorough and systematic test of the single-layer approximation for multi-layer films for Reynolds numbers \(Re = \rho Q/\mu \approx 0.03 - 60\). In addition, we also measure the change in film thickness of individual layers as a function of flow rates for a variety of experimental configurations. With the aid of high-speed particle tracking, we derive the velocity fields and free-surface velocities to compare to the single-layer approximation. Furthermore, we provide experimental evidence of small capillary ridge formations close to the point where two layers merge and compare our experimental parameter range for the occurrence of this phenomenon to those previously reported.

Keywords

Particle Image Velocimetry Incline Plane Film Flow Streamwise Development Total Film Thickness 
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 Berlin Heidelberg 2014

Authors and Affiliations

  • D. Henry
    • 1
  • J. Uddin
    • 1
  • J. Thompson
    • 2
  • M. G. Blyth
    • 2
  • S. T. Thoroddsen
    • 3
  • J. O. Marston
    • 4
  1. 1.School of MathematicsUniversity of BirminghamEdgbastonUnited Kingdom
  2. 2.School of MathematicsUniversity of East AngliaNorwichUnited Kingdom
  3. 3.Division of Physical Sciences and EngineeringKing Abdullah University of Science and TechnologyThuwalSaudi Arabia
  4. 4.Department of Chemical EngineeringTexas Tech UniversityLubbockUSA

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