EXPERIMENTAL STUDY OF A MICROMETER-SIZED DROPLET IMPINGING ON A SMOOTH HEATED SURFACE

被引：0

作者：

Zhang, Zhen ^{[1
]}

Chen, Kai ^{[2
]}

Jiang, Pei-Xue ^{[2
]}

Yang, Xing-Tuan ^{[1
]}

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Collaborat Innovat Ctr Adv Nucl Energy Technol, Key Lab Adv Nucl Reactor Engn & Safety,Minist Edu, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Thermal Engn, Minist Educ, Key Lab Thermal Sci & Power Engn, Beijing 100084, Peoples R China

来源：

PROCEEDINGS OF THE 26TH INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING, 2018, VOL 6A | 2018年

基金：

中国国家自然科学基金;

关键词：

micrometer-sized droplet; high speed camera; spreading; evaporating; boiling; WATER DROPLETS; EVAPORATION; IMPACT; DYNAMICS;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The micrometer-sized (similar to 100 mu m) droplet impinging on a surface at 46 degrees C or 120 degrees C was experimentally investigated for spray cooling system in nuclear plants and other high heat flux applications. Photographs were taken continuously by a high speed camera with 256x128 pixel to 300, 000 fps and a silicon surface was used as the test surface, heat source and temperature sensor. The time sequences of the droplet impingement cooling process on a surface were presented and analyzed. The effects of the droplet size and velocity were studied. The droplet spreading and evaporating on a 120 degrees C surface with or without boiling were shown and discussed.

引用

页数：5

共 13 条

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