Experimental Study of the Wave Flow of a Liquid Film on a Heated Surface

D. V. Zaǐtsev, E. A. Chinnov, O. A. Kabov, I. V. Marchuk

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

The wave flow of a water film over the surface of a vertical plate with a 150 × 150-mm heater has been experimentally studied. The action of heat flux on the wave flow of the liquid film is manifested by the formation of periodic flowing rivulets separated by thin film regions. The thickness of the film between rivulets was measured using a fiber optical reflection probe. As the heat flux grows, the average film thickness h continuously decreases. However, when the thickness reaches h ≈ 0.5h0, where h0 is the value given by the Nusselt formula for a laminar liquid film, the film exhibits spontaneous rupture. It was found that, as the local flow rate decreases, the wave amplitude in the region between rivulets drops more rapidly than expected according to the laws of "cold hydrodynamics."

Original languageEnglish
Pages (from-to)231-233
Number of pages3
JournalTechnical Physics Letters
Volume30
Issue number3
DOIs
Publication statusPublished - 1 Mar 2004

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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