Effect of viscosity on thermocapillary breakdown of a falling liquid film
- Authors: Zaitsev D.V.1, Semenov A.A.1, Kabov O.A.1,2
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Affiliations:
- Kutateladze Institute of Thermophysics SB RAS
- Tomsk Polytechnic University
- Issue: Vol 23, No 4 (2016)
- Pages: 625-628
- Section: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/216603
- DOI: https://doi.org/10.1134/S0869864316040168
- ID: 216603
Cite item
Abstract
Thermocapillary breakdown of a liquid film flowing due to gravity over a vertical plate with a heater of 150×150 mm is studied in a wide range of liquid properties (in particular, dynamic viscosity at the initial temperature varies from 0.91·10-3 to 16.9·10-3 Pa·s) and film Reynolds number (Re = 0.15-53.5). It is found that liquid viscosity has a significant effect on the threshold heat flux corresponding to film breakdown. To take into account the effect of liquid properties, the breakdown criterion traditionally used in literature was modified. This allowed successful generalization of all data obtained.
About the authors
D. V. Zaitsev
Kutateladze Institute of Thermophysics SB RAS
Author for correspondence.
Email: zaitsev@itp.nsc.ru
Russian Federation, Novosibirsk
A. A. Semenov
Kutateladze Institute of Thermophysics SB RAS
Email: zaitsev@itp.nsc.ru
Russian Federation, Novosibirsk
O. A. Kabov
Kutateladze Institute of Thermophysics SB RAS; Tomsk Polytechnic University
Email: zaitsev@itp.nsc.ru
Russian Federation, Novosibirsk; Tomsk