Hydrodynamic instabilities of a viscous liquid film flowing down an inclined or vertical plane

2021 ◽  
Vol 33 (10) ◽  
pp. 103105
Author(s):  
S. Dholey ◽  
S. Gorai
Keyword(s):  
Liquid Film ◽  
Viscous Liquid ◽  
Vertical Plane ◽  
Hydrodynamic Instabilities ◽  
Viscous Liquid Film

scholarly journals Hydrodynamics of Two-Phase Gas-Very Viscous Liquid Flow in Heat Exchange Conditions

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5709
Author(s):  
Krystian Czernek ◽  
Stanisław Witczak
Keyword(s):  
Liquid Film ◽  
Viscous Liquid ◽  
Capillary Waves ◽  
Liquid Cooling ◽  
Two Phase ◽  
Flow Parameters ◽  
Smooth Interface ◽  
Viscous Liquid Film ◽  
Vertical Tubes ◽  
The Impact

This paper presents the results of analyses of the impact of heat transfer conditions on the hydrodynamics of downward co-current annular flow in vertical tubes of very viscous liquid and gas. The research was conducted within the range of gas velocities of 0–30.0 m/s and liquid velocities of 0.001–0.254 m/s, while the viscosity was in the unprecedented range of 0.046–3.5 Pas. The research demonstrates that the volume and nature of the liquid waves with various amplitudes and frequencies arising on the surface of the film are relative to the flow rate and viscosity of the gas phase. At the same time, we found that, under the condition of liquid cooling, an increase in viscosity resulted in the formation of a smooth interface whereas, under the conditions where the liquid is heated at the end of the channel section, a greater number of capillary waves were formed. This research resulted in the development of new dependencies which take into account the influence of selected thermal and flow parameters (including mass fraction) on the values of volumes specific to very viscous liquid film flows. These dependencies improve the accuracy of calculation by 8–10% and are fully applicable to the description of the performance of an apparatus with a hydraulically generated liquid film.

Shear-Driven Flow of Locally Heated Viscous Liquid Film in a Minichannel

2011 ◽  
Vol 23 (S1) ◽  
pp. 105-112 ◽  
Author(s):  
Yulia O. Kabova ◽  
V. V. Kuznetsov ◽  
O. A. Kabov
Keyword(s):  
Liquid Film ◽  
Viscous Liquid ◽  
Viscous Liquid Film

Evaporation of a thin viscous liquid film sheared by gas in a microchannel

2014 ◽  
Vol 68 ◽  
pp. 527-541 ◽  
Author(s):  
Yu. Kabova ◽  
V.V. Kuznetsov ◽  
O. Kabov ◽  
T. Gambaryan-Roisman ◽  
P. Stephan
Keyword(s):  
Liquid Film ◽  
Viscous Liquid ◽  
Viscous Liquid Film

Spatial wave regimes on a surface of thin viscous liquid film

1993 ◽  
Vol 63 (3-4) ◽  
pp. 361-377 ◽  
Author(s):  
O.Yu. Tsvelodub ◽  
L.N. Kotychenko
Keyword(s):  
Liquid Film ◽  
Viscous Liquid ◽  
Viscous Liquid Film
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