Dynamics of viscoelastic flow through axisymmetric constricted microcapillary at high elasticity number

2020 ◽  
Vol 286 ◽  
pp. 104438
Author(s):  
J.A.F. Gutiérrez ◽  
M.J.B. Moura ◽  
M.S. Carvalho
Keyword(s):  
Viscoelastic Flow ◽  
High Elasticity ◽  
Flow Through ◽  
Elasticity Number

Measurement of pressure loss and observation of the flow field in viscoelastic flow through an undulating channel

2000 ◽  
Vol 44 (1) ◽  
pp. 65-78 ◽  
Author(s):  
Takashi Koshiba ◽  
Noriyasu Mori ◽  
Kiyoji Nakamura ◽  
Shiro Sugiyama
Keyword(s):  
Flow Field ◽  
Pressure Loss ◽  
Viscoelastic Flow ◽  
Flow Through

Bifurcation phenomenon of inertial viscoelastic flow through gradual expansions

2015 ◽  
Vol 54 (5) ◽  
pp. 423-435 ◽  
Author(s):  
Mahmood Norouzi ◽  
Mohammad Mohsen Shahmardan ◽  
Amin Shahbani Zahiri
Keyword(s):  
Viscoelastic Flow ◽  
Bifurcation Phenomenon ◽  
Flow Through

Viscoelastic Flow through a Microchannel with a Sudden Contraction

2004 ◽  
Vol 2004 (0) ◽  
pp. 57
Author(s):  
Kazunori YASUDA ◽  
Yuichi SUGIURA ◽  
Noriyasu MORI
Keyword(s):  
Viscoelastic Flow ◽  
Sudden Contraction ◽  
Flow Through

Efflux perturbation in slow viscoelastic flow through tubes

1967 ◽  
Vol 4 (2) ◽  
pp. 164-169 ◽  
Author(s):  
Shih-I Chou ◽  
A. C. Pipkin
Keyword(s):  
Viscoelastic Flow ◽  
Flow Through

The effect of surfactant on the stability of a fluid filament embedded in a viscous fluid

1999 ◽  
Vol 382 ◽  
pp. 331-349 ◽  
Author(s):  
S. HANSEN ◽  
G. W. M. PETERS ◽  
H. E. H. MEIJER
Keyword(s):  
Surface Tension ◽  
Growth Rate ◽  
Reynolds Number ◽  
Stability Analysis ◽  
Viscous Fluid ◽  
High Elasticity ◽  
Fluid Filament ◽  
The Stability ◽  
Elasticity Number

The effect of surfactant on the breakup of a viscous filament, initially at rest, surrounded by another viscous fluid is studied using linear stability analysis. The role of the surfactant is characterized by the elasticity number – a high elasticity number implies that surfactant is important. As expected, the surfactant slows the growth rate of disturbances. The influence of surfactant on the dominant wavenumber is less trivial. In the Stokes regime, the dominant wavenumber for most viscosity ratios increases with the elasticity number; for filament to matrix viscosity ratios ranging from about 0.03 to 0.4, the dominant wavenumber decreases when the elasticity number increases. Interestingly, a surfactant does not affect the stability of a filament when the surface tension (or Reynolds) number is very large.

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