Flow structure in three-dimensional waves on a vertically falling liquid film

A. Z. Kvon; A. V. Bobylev; V. V. Guzanov; S. M. Kharlamov; D. M. Markovich

doi:10.1134/S1063785017090218

Flow structure in three-dimensional waves on a vertically falling liquid film

Authors: Kvon A.Z.¹^,2, Bobylev A.V.¹^,2, Guzanov V.V.¹^,2, Kharlamov S.M.¹^,2, Markovich D.M.¹^,2
Affiliations:
1. Kutateladze Institute of Thermophysics, Siberian Branch
2. Novosibirsk State University
Issue: Vol 43, No 9 (2017)
Pages: 821-824
Section: Article
URL: https://journals.rcsi.science/1063-7850/article/view/205967
DOI: https://doi.org/10.1134/S1063785017090218
ID: 205967

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Abstract

We have simultaneously measured the velocity vector and film thickness fields in three-dimensional (3D) waves formed upon the decay of regular 2D waves on a liquid film flowing down a vertical plate. Velocity fields at various distances from the plate surface in various regions of a 3D wave are constructed. It is shown that the liquid flow in the wave has a complex structure with regions of backflow and spanwise streams, which mainly occur under the main crest of the wave.