Dynamic simulation of non-spherical particulate suspensions | Zendy

Prakorn Kittipoomwong | Zendy; Howard See | Zendy; N. MaiDuy | Zendy

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Dynamic simulation of non-spherical particulate suspensions

Author(s) -

Prakorn Kittipoomwong,

Howard See,

N. MaiDuy

Publication year - 2009

Publication title -

rheologica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.775

H-Index - 80

eISSN - 1435-1528

pISSN - 0035-4511

DOI - 10.1007/s00397-009-0412-6

Subject(s) - mechanics , spheres , simple shear , newtonian fluid , rheology , particle (ecology) , shear flow , classical mechanics , shear (geology) , materials science , brownian motion , viscosity , suspension (topology) , physics , flow (mathematics) , shear stress , composite material , geology , mathematics , oceanography , quantum mechanics , astronomy , homotopy , pure mathematics

Particle-level simulation has been employed to investigate rheology and microstructure of nonspherical particulate suspensions in a simple shear flow. Non-spherical particles in Newtonian fluids are modeled as three-dimensional clusters of neutrally buoyant, non-Brownian spheres linked together by Hookeantype constraint force. Rotne–Prager correction to velocity disturbance has been employed to account for far-field hydrodynamic interactions. An isolated rodlike particle in simple shear flow exhibits a periodic orientation distribution, commonly referred to as Jeffery orbit. Lubrication-like repulsive potential between\udclusters have been included in simulation of rod-like\udsuspensions at various aspect ratios over dilute to semidilute volume fractions. Shear viscosity evaluated by\udorientation distribution qualitatively agrees with one\udobtained by direct computation of shear stress

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