A method for the determination of shear viscosity of power–law fluids in a rectangular duct and concentric annulus

2021 ◽  
Author(s):  
Mehmet Ayas ◽  
Jan Skočilas ◽  
Tomaš Jirout
Keyword(s):  
Power Law ◽  
Shear Viscosity ◽  
Rectangular Duct ◽  
Concentric Annulus ◽  
Power Law Fluids

Determination of Hagenbach and Coutte Correction Factors for the Flow of Power Law Fluids

1998 ◽  
Vol 35 (4) ◽  
pp. 237-242 ◽  
Author(s):  
N. V. K. Dutt
Keyword(s):  
Power Law ◽  
Correction Factors ◽  
Power Law Fluids

Electrochemical determination of diffusivities in non-newtonian power-law fluids by a rotating geiss body

1987 ◽  
Vol 35 (3) ◽  
pp. 191-199 ◽  
Author(s):  
I. Nikov ◽  
V. Beschkov ◽  
P. Stoyanova
Keyword(s):  
Power Law ◽  
Electrochemical Determination ◽  
Power Law Fluids

Experimental verification of power-law non-Newtonian axisymmetric porous gravity currents

2013 ◽  
Vol 731 ◽  
Author(s):  
Sandro Longo ◽  
Vittorio Di Federico ◽  
Luca Chiapponi ◽  
Renata Archetti
Keyword(s):  
Power Law ◽  
Gravity Currents ◽  
Nonlinear Ordinary Differential Equation ◽  
Rheological Parameters ◽  
Homogeneous Porous Media ◽  
Power Law Fluids ◽  
Water Glycerol ◽  
Similar Solutions ◽  
Selection Of

AbstractWe present a theoretical and experimental analysis of axisymmetric gravity currents of power-law fluids in homogeneous porous media. The non-Newtonian shear-thinning fluid is a mixture of water, glycerol and Xanthan gum ($n= 0. 33{\unicode{x2013}} 0. 53$), and it is injected into a porous layer of glass beads ($d= 1{\unicode{x2013}} 3~\mathrm{mm} $). We compare experiments conducted with constant ($\alpha = 1$) and time-increasing ($\alpha = 1. 5$ and $2. 0$) influxes to theoretical self-similar solutions obtained by the numerical integration of the nonlinear ordinary differential equation that describes one-dimensional transient motion. The theoretical analysis is confirmed by experimental data. In addition, the selection of the most appropriate expression for the tortuosity factor and the choice of the correct range of shear stress for the determination of the rheological parameters are shown to be crucial to obtaining a good fit between the theory and experiments.

Unsteady Axial Laminar Couette Flow of Power-Law Fluids in a Concentric Annulus

1996 ◽  
Vol 35 (6) ◽  
pp. 2039-2047 ◽  
Author(s):  
Yuan Wang ◽  
Godwin A. Chukwu
Keyword(s):  
Couette Flow ◽  
Power Law ◽  
Concentric Annulus ◽  
Power Law Fluids

A practical method for predicting the friction factor of power-law fluids in a rectangular duct

2019 ◽  
Vol 206 (10) ◽  
pp. 1310-1316 ◽  
Author(s):  
Mehmet Ayas ◽  
Jan Skocilas ◽  
Tomas Jirout
Keyword(s):  
Friction Factor ◽  
Power Law ◽  
Practical Method ◽  
Rectangular Duct ◽  
Power Law Fluids

scholarly journals Determination of Rheological Parameters from Measurements on a Viscometer with Coaxial Cylinders

10.14311/832 ◽  
2006 ◽  
Vol 46 (3) ◽  
Author(s):  
F. Rieger
Keyword(s):  
Power Law ◽  
Rheological Model ◽  
Newtonian Fluids ◽  
Rheological Parameters ◽  
Model Parameters ◽  
Coaxial Cylinders ◽  
Power Law Fluids

The paper deals with measurements of non-Newtonian fluids on a viscometer with coaxial cylinders. The procedure for determining the rheological model parameters is recommended  for power-law fluids and Bingham plastics. 

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