The effect of substrate wettability on the breakdown of a locally heated fluid film

The effect of substrate wettability on the breakdown of a locally heated fluid film

Bibliographic Details
Parent link:Technical Physics Letters: Scientific Journal.— , 1975-
Vol. 41, iss. 6.— 2015.— [P. 551-553]
Main Author: Zaitsev D. V. Dmitry Valerievich
Corporate Authors: Национальный исследовательский Томский политехнический университет Институт неразрушающего контроля Кафедра физических методов и приборов контроля качества, Национальный исследовательский Томский политехнический университет Энергетический институт Кафедра теоретической и промышленной теплотехники
Other Authors: Kirichenko D. P. Dmitry Pavlovich, Kabov O. A. Oleg Aleksandrovich
Summary:Title screen
The effect of the equilibrium contact angle of wetting on the dynamics of the dry patch propagation and on the critical heat flux upon the breakdown of a water film that is heated locally from the substrate side is studied experimentally. The equilibrium contact angle is varied from 27° ± 6° to 74° ± 9° (with no changes in the thermophysical properties of the system) through the use of different types of surface grinding. The studies are performed for three flow modes: (a) a fluid film that freely flows down along a substrate with an inclination of 5° to the horizon, (b) a film that moves along a horizontal substrate under the influence of hydrostatic pressure, and (c) a static film on a horizontal substrate. It is found that the substrate wettability has a significant effect on the dry patch propagation rate and its final size in all these cases, but has almost no effect on the threshold heat flux at which the breakdown of a film occurs.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2015
Subjects:
электронный ресурс
труды учёных ТПУ
смачиваемость
пленки
Online Access:http://dx.doi.org/10.1134/S1063785015060140
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=648409

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