Thermocapillary instability of a liquid layer under heat flux modulation

2009 ◽  
Vol 21 (6) ◽  
pp. 062102 ◽  
Author(s):  
B. L. Smorodin ◽  
A. B. Mikishev ◽  
A. A. Nepomnyashchy ◽  
B. I. Myznikova
Keyword(s):  
Heat Flux ◽  
Liquid Layer ◽  
Thermocapillary Instability ◽  
Flux Modulation

Study on Subcooled-Forced Flow Boiling Heat Transfer and Critical Heat Flux of Solid-Water Two-Phase Mixture

1999 ◽  
Author(s):  
Yasuo Koizumi ◽  
Hiroyasu Ohtake ◽  
Manabu Mochizuki
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Critical Heat Flux ◽  
Liquid Layer ◽  
Boiling Heat Transfer ◽  
Flow Boiling ◽  
Nucleate Boiling ◽  
Forced Flow ◽  
Superheated Liquid ◽  
Flow Boiling Heat Transfer

Abstract The effect of solid particle introduction on subcooled-forced flow boiling heat transfer and a critical heat flux was examined experimentally. In the experiment, glass beads of 0.6 mm diameter were mixed in subcooled water. Experiments were conducted in a range of the subcooling of 40 K, a velocity of 0.17–6.7 m/s, a volumetric particle ratio of 0–17%. When particles were introduced, the growth of a superheated liquid layer near a heat trasnsfer surface seemed to be suppressed and the onset of nucleate boiling was delayed. The particles promoted the condensation of bubbles on the heat transfer surface, which shifted the initiation of a net vapor generation to a high heat flux region. Boiling heat trasnfer was augmented by the particle introduction. The suppression of the growth of the superheated liquid layer and the promotion of bubble condensation and dissipation by the particles seemed to contribute that heat transfer augmentation. The wall superheat at the critical heat flux was elevated by the particle introduction and the critical heat flux itself was also enhanced. However, the degree of the critical heat flux improvement was not drastic.

A heat flux modulator from carbon nanotubes

Nanoscale ◽  
2015 ◽  
Vol 7 (32) ◽  
pp. 13759-13764 ◽  
Author(s):  
Shaohui Jiang ◽  
Guang Zhang ◽  
Dan Xia ◽  
Changhong Liu ◽  
Shoushan Fan
Keyword(s):  
Carbon Nanotubes ◽  
Heat Flux ◽  
Carbon Nanotube ◽  
Flux Modulation

A suspended carbon nanotube sheet achieved heat flux modulation along its length through an pendent block.

scholarly journals Heat Flux Modulation in Domino Dynamo Model

2013 ◽  
Vol 03 (02) ◽  
pp. 55-59 ◽  
Author(s):  
M. Reshetnyak ◽  
P. Hejda
Keyword(s):  
Heat Flux ◽  
Dynamo Model ◽  
Flux Modulation
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