Influence of Newtonian and non-Newtonian fluid behaviour on void fraction and bubble size for a gas-liquid flow of sub-millimeter bubbles at low void fractions

Influence of Newtonian and non-Newtonian fluid behaviour on void fraction and bubble size for a gas-liquid flow of sub-millimeter bubbles at low void fractions

[Display omitted] •Effect of Newtonian/non-Newtonian fluid behaviour on void fraction and bubble size.•Examined conditions resemble bubbly flow in human bloodstream during Decompression Sickness.•Non-Newtonian liquid character is primarily responsible for bubble size increase and void fraction decre...

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Veröffentlicht in:Experimental thermal and fluid science 2019-12, Vol.109, p.109912, Article 109912
Hauptverfasser: Gkotsis, Petros K., Evgenidis, Sotiris P., Karapantsios, Thodoris D.
Format: Artikel
Sprache:eng
Schlagworte:
Bubble size distribution
Bubbles
Bubbly flow
Data acquisition
Decompression
Decompression sickness
Dependence
Electrical impedance
Electrical impedance technique
Empirical equations
Fluid dynamics
Glycerol
Image analysis
Image processing
Liquid flow
Mimicry
Newtonian fluids
Newtonian liquids
Non Newtonian fluids
Non Newtonian liquids
Non-Newtonian behaviour
Particle size distribution
Shear thinning (liquids)
Size distribution
Sodium chloride
Surface tension
Viscosity
Void fraction
Xanthan
Xanthan gum
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Zusammenfassung:[Display omitted] •Effect of Newtonian/non-Newtonian fluid behaviour on void fraction and bubble size.•Examined conditions resemble bubbly flow in human bloodstream during Decompression Sickness.•Non-Newtonian liquid character is primarily responsible for bubble size increase and void fraction decrease.•Bubble size strongly affects void fraction fluctuations independently of Newtonian/non-Newtonian liquid behaviour.•Bubbles clusters are observed in a highly pseudoplastic liquid at Usl 
ISSN:0894-1777
1879-2286
DOI:10.1016/j.expthermflusci.2019.109912