Thermocapillary instability in a viscoelastic liquid layer under an imposed oblique temperature gradient

2021 ◽  
Vol 33 (1) ◽  
pp. 012107
Author(s):  
Ramkarn Patne ◽  
Yehuda Agnon ◽  
Alexander Oron
Keyword(s):  
Temperature Gradient ◽  
Liquid Layer ◽  
Viscoelastic Liquid ◽  
Thermocapillary Instability

Thermocapillary instability of a viscoelastic liquid layer

1985 ◽  
Vol 55 (1-2) ◽  
pp. 137-149 ◽  
Author(s):  
D. Getachew ◽  
S. Rosenblat
Keyword(s):  
Liquid Layer ◽  
Viscoelastic Liquid ◽  
Thermocapillary Instability

TRAVEL INSTABILITIES IN LATERAL HEATING

2001 ◽  
Vol 11 (11) ◽  
pp. 2881-2886 ◽  
Author(s):  
M. A. PELACHO ◽  
A. GARCIMARTÍN ◽  
J. BURGUETE
Keyword(s):  
Free Surface ◽  
Temperature Gradient ◽  
Liquid Layer ◽  
Temperature Difference ◽  
Convective Motion ◽  
Lateral Heating ◽  
Rectangular Container ◽  
The Waves

We study the convective motion forced by lateral heating on a liquid layer. The movement is caused by two forces: buoyancy and thermocapillarity on the free surface, which is open to the air. As soon as a temperature gradient is imposed along the liquid layer, the fluid begins to move. When a certain threshold of the temperature difference is attained, this flow destabilizes and oscillations appear. We have performed an experiment to characterize the thermocapillary waves in a rectangular container whose dimensions can be continuously changed. This way, we are able to investigate how boundaries affect the threshold for the instability, as well as their consequences on other features of the waves.

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