Apparent wall slip velocity measurements in free surface flow of concentrated suspensions

2011 ◽  
Vol 37 (6) ◽  
pp. 609-619 ◽  
Author(s):  
Bhaskar Jyoti Medhi ◽  
A. Ashok Kumar ◽  
Anugrah Singh
Keyword(s):  
Free Surface ◽  
Slip Velocity ◽  
Wall Slip ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Velocity Measurements ◽  
Concentrated Suspensions ◽  
Apparent Wall Slip

Free-surface flow of concentrated suspensions

2006 ◽  
Vol 32 (7) ◽  
pp. 775-790 ◽  
Author(s):  
Anugrah Singh ◽  
Avinoam Nir ◽  
Raphael Semiat
Keyword(s):  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Concentrated Suspensions

Apparent wall slip velocity coefficients in concentrated suspensions of noncolloidal particles

1995 ◽  
Vol 39 (6) ◽  
pp. 1123-1132 ◽  
Author(s):  
S. C. Jana ◽  
B. Kapoor ◽  
A. Acrivos
Keyword(s):  
Slip Velocity ◽  
Wall Slip ◽  
Concentrated Suspensions ◽  
Apparent Wall Slip

scholarly journals Granular-front formation in free-surface flow of concentrated suspensions

2015 ◽  
Vol 92 (5) ◽  
Author(s):  
Alessandro Leonardi ◽  
Miguel Cabrera ◽  
Falk K. Wittel ◽  
Roland Kaitna ◽  
Miller Mendoza ◽  
...  
Keyword(s):  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Concentrated Suspensions

Velocity measurements on highly turbulent free surface flow using ADV

2007 ◽  
Vol 42 (3) ◽  
pp. 333-348 ◽  
Author(s):  
L. Cea ◽  
J. Puertas ◽  
L. Pena
Keyword(s):  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Velocity Measurements

Experimental investigation of interface deformation in free surface flow of concentrated suspensions

2016 ◽  
Vol 28 (11) ◽  
pp. 113302 ◽  
Author(s):  
A. Ashok Kumar ◽  
Bhaskar Jyoti Medhi ◽  
Anugrah Singh
Keyword(s):  
Experimental Investigation ◽  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Concentrated Suspensions ◽  
Interface Deformation

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 Laminar free-surface flow into a vertical cylinder

1975 ◽  
Vol 3 (1) ◽  
pp. 51-68 ◽  
Author(s):  
Thomas G. Smith ◽  
J.O. Wilkes
Keyword(s):  
Free Surface ◽  
Vertical Cylinder ◽  
Free Surface Flow ◽  
Surface Flow

Free-Surface Flow Simulations With Interactively Moving Bodies

2017 ◽  
Author(s):  
Arthur E. P. Veldman ◽  
Henk Seubers ◽  
Peter van der Plas ◽  
Joop Helder
Keyword(s):  
Free Surface ◽  
Free Fall ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Numerical Solution Method ◽  
Flow Simulations ◽  
Floating Object ◽  
Offshore Industry ◽  
Floating Objects ◽  
Moving Bodies

The simulation of free-surface flow around moored or floating objects faces a series of challenges, concerning the flow modelling and the numerical solution method. One of the challenges is the simulation of objects whose dynamics is determined by a two-way interaction with the incoming waves. The ‘traditional’ way of numerically coupling the flow dynamics with the dynamics of a floating object becomes unstable (or requires severe underrelaxation) when the added mass is larger than the mass of the object. To deal with this two-way interaction, a more simultaneous type of numerical coupling is being developed. The paper will focus on this issue. To demonstrate the quasi-simultaneous method, a number of simulation results for engineering applications from the offshore industry will be presented, such as the motion of a moored TLP platform in extreme waves, and a free-fall life boat dropping into wavy water.

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