Effect of flow geometry on the evolution of concentrated suspensions flowing through a fracture

2018 ◽  
Vol 108 ◽  
pp. 80-92
Author(s):  
Ricardo Medina ◽  
Russell L. Detwiler ◽  
Romain Prioul ◽  
Wenyue Xu ◽  
Jean E. Elkhoury
Keyword(s):  
Concentrated Suspensions ◽  
Flow Geometry

scholarly journals Quantification of shear viscosity and wall slip velocity of highly concentrated suspensions with non-Newtonian matrices in pressure driven flows

2021 ◽  
Author(s):  
Patrick Wilms ◽  
Jan Wieringa ◽  
Theo Blijdenstein ◽  
Kees van Malssen ◽  
Reinhard Kohlus
Keyword(s):  
Shear Stress ◽  
Liquid Phase ◽  
Shear Rate ◽  
Shear Viscosity ◽  
Slip Velocity ◽  
Volume Fraction ◽  
Solid Volume Fraction ◽  
Wall Slip ◽  
Flow Index ◽  
Concentrated Suspensions

AbstractThe rheological characterization of concentrated suspensions is complicated by the heterogeneous nature of their flow. In this contribution, the shear viscosity and wall slip velocity are quantified for highly concentrated suspensions (solid volume fractions of 0.55–0.60, D4,3 ~ 5 µm). The shear viscosity was determined using a high-pressure capillary rheometer equipped with a 3D-printed die that has a grooved surface of the internal flow channel. The wall slip velocity was then calculated from the difference between the apparent shear rates through a rough and smooth die, at identical wall shear stress. The influence of liquid phase rheology on the wall slip velocity was investigated by using different thickeners, resulting in different degrees of shear rate dependency, i.e. the flow indices varied between 0.20 and 1.00. The wall slip velocity scaled with the flow index of the liquid phase at a solid volume fraction of 0.60 and showed increasingly large deviations with decreasing solid volume fraction. It is hypothesized that these deviations are related to shear-induced migration of solids and macromolecules due to the large shear stress and shear rate gradients.

scholarly journals Using flow geometry for drifter deployment in Lagrangian data assimilation

2008 ◽  
Vol 60 (2) ◽  
pp. 321-335 ◽  
Author(s):  
H. Salman ◽  
K. Ide ◽  
C. K. R. T. Jones
Keyword(s):  
Data Assimilation ◽  
Flow Geometry ◽  
Lagrangian Data

Simulation of concentrated suspensions in free surface systems

2016 ◽  
Vol 94 (11) ◽  
pp. 2145-2152 ◽  
Author(s):  
Mahyar Javidi ◽  
Andrew N. Hrymak
Keyword(s):  
Free Surface ◽  
Concentrated Suspensions

Flow behavior of concentrated suspensions

1995 ◽  
Vol 39 (4) ◽  
pp. 795-795
Author(s):  
Yasufumi Otsubo
Keyword(s):  
Flow Behavior ◽  
Concentrated Suspensions

scholarly journals Effect of flow geometry on the nanoparticle output of a spark discharge generator

2021 ◽  
Vol 154 ◽  
pp. 105758
Author(s):  
Dániel Megyeri ◽  
Attila Kohut ◽  
Zsolt Geretovszky
Keyword(s):  
Spark Discharge ◽  
Flow Geometry ◽  
Discharge Generator

Effect of flow-geometry on turbulence-scalar interaction in premixed flames

2011 ◽  
Vol 23 (12) ◽  
pp. 125107 ◽  
Author(s):  
Y. Minamoto ◽  
N. Fukushima ◽  
M. Tanahashi ◽  
T. Miyauchi ◽  
T. D. Dunstan ◽  
...  
Keyword(s):  
Premixed Flames ◽  
Scalar Interaction ◽  
Flow Geometry
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