The dynamics of the annular liquid layer inside a cylindrical capillary

2016 ◽  
Vol 28 (2) ◽  
pp. 024107 ◽  
Author(s):  
Hua Zhang ◽  
Alex Nikolov ◽  
Jianyuan Feng ◽  
Darsh Wasan
Keyword(s):  
Liquid Layer ◽  
Cylindrical Capillary

ABSOLUTE AND CONVECTIVE INSTABILITY OF A CONFINED SWIRLING ANNULAR LIQUID LAYER

2014 ◽  
Vol 24 (7) ◽  
pp. 555-573 ◽  
Author(s):  
Qing-Fei Fu ◽  
Li-Jun Yang ◽  
Ming-xi Tong ◽  
Chen Wang
Keyword(s):  
Liquid Layer ◽  
Convective Instability

STUDY ON SUPERHEATED LIQUID LAYER IN POOL BOILING

2018 ◽  
Author(s):  
Mao Takeyama ◽  
Tomoaki Kunugi ◽  
Takehiko Yokomine ◽  
Zensaku Kawara
Keyword(s):  
Liquid Layer ◽  
Pool Boiling ◽  
Superheated Liquid

An Analytical Thermodynamic Approach to Friction of Rubber on Ice

2012 ◽  
Vol 40 (2) ◽  
pp. 124-150
Author(s):  
Klaus Wiese ◽  
Thiemo M. Kessel ◽  
Reinhard Mundl ◽  
Burkhard Wies
Keyword(s):  
Coefficient Of Friction ◽  
Liquid Layer ◽  
Contact Area ◽  
Leading Edge ◽  
Viscous Friction ◽  
Analytical Approximation ◽  
Real Contact Area ◽  
Length Scales ◽  
Real Contact ◽  
Ice Surface

ABSTRACT The presented investigation is motivated by the need for performance improvement in winter tires, based on the idea of innovative “functional” surfaces. Current tread design features focus on macroscopic length scales. The potential of microscopic surface effects for friction on wintery roads has not been considered extensively yet. We limit our considerations to length scales for which rubber is rough, in contrast to a perfectly smooth ice surface. Therefore we assume that the only source of frictional forces is the viscosity of a sheared intermediate thin liquid layer of melted ice. Rubber hysteresis and adhesion effects are considered to be negligible. The height of the liquid layer is driven by an equilibrium between the heat built up by viscous friction, energy consumption for phase transition between ice and water, and heat flow into the cold underlying ice. In addition, the microscopic “squeeze-out” phenomena of melted water resulting from rubber asperities are also taken into consideration. The size and microscopic real contact area of these asperities are derived from roughness parameters of the free rubber surface using Greenwood-Williamson contact theory and compared with the measured real contact area. The derived one-dimensional differential equation for the height of an averaged liquid layer is solved for stationary sliding by a piecewise analytical approximation. The frictional shear forces are deduced and integrated over the whole macroscopic contact area to result in a global coefficient of friction. The boundary condition at the leading edge of the contact area is prescribed by the height of a “quasi-liquid layer,” which already exists on the “free” ice surface. It turns out that this approach meets the measured coefficient of friction in the laboratory. More precisely, the calculated dependencies of the friction coefficient on ice temperature, sliding speed, and contact pressure are confirmed by measurements of a simple rubber block sample on artificial ice in the laboratory.

STUDY OF THE EFFECT OF AIR CONSUMPTION, LIQUID LAYER HEIGHT AND TEMPERATURE ON THE PROCESS OF FLOTATION SEPARATION OF GROUND PLASTICS

2020 ◽  
Vol 3 (441) ◽  
pp. 36-43
Author(s):  
А. Leudanski ◽  
◽  
Y. Apimakh ◽  
А. Volnenko ◽  
D. Zhumadullayev ◽  
...  
Keyword(s):  
Liquid Layer ◽  
Layer Height

Bubble formation from a submerged orifice in a thin liquid layer: Detachment and bursting

2021 ◽  
Vol 33 (1) ◽  
pp. 013305
Author(s):  
Yujia Zhou ◽  
Bingqiang Ji ◽  
Chenru Zhao ◽  
Hanliang Bo
Keyword(s):  
Liquid Layer ◽  
Bubble Formation ◽  
Thin Liquid Layer ◽  
Submerged Orifice

Exploiting cellular convection in a thick liquid layer to pattern a thin polymer film

2016 ◽  
Vol 108 (5) ◽  
pp. 051604 ◽  
Author(s):  
Iman Nejati ◽  
Mathias Dietzel ◽  
Steffen Hardt
Keyword(s):  
Polymer Film ◽  
Liquid Layer ◽  
Thin Polymer Film ◽  
Thin Polymer
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