Effect of a Low-Thermal-Conductive Coating on the Dynamics of Rewetting of Overheated Plate by Falling Liquid Film

被引：15

作者：

Pavlenko, A. N. ^{[1
]}

Tsoi, A. N. ^{[1
]}

Surtaev, A. S. ^{[1
]}

Kuznetsov, D. V. ^{[2
]}

Serdyukov, V. S. ^{[2
]}

机构：

[1] Russian Acad Sci, Kutateladze Inst Thermophys, Siberian Branch, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

HIGH TEMPERATURE | 2016年 / 54卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S0018151X16020139

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The experimental results of rewetting of overheated vertical copper heater with a low-thermal-conductive coating by a falling nitrogen film are presented. It is shown that the presence of the coating affects significantly the feature of the temperature curves and decreases the total plate cooling time by more than fourfold. The experimental data obtained earlier showed that the rewetting front propagating over the copper plate without coating was one-dimensional. It is revealed by comparison of the experimental data that the presence of the low-thermal-conductive coating results in the appearance of the front of a cellular structure with regular boiling jets, characteristic of rewetting of overheated thin plates. The synchronized measurements of the plate temperature and high-speed video recording of the transition processes show that the higher rate of cooling in the presence of the coating is associated with the development of intense boiling in the rewetting front at a much higher temperature of the plate.

引用

页码：370 / 376

页数：7

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