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Rheological equations in asymptotic regimes of granular flow

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Rheological equations in asymptotic regimes of granular flow; 1998; Article; Journal; Journal of Engineering Mechanics; Chen, C. -L.; Ling, C. -H.

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This paper assesses the validity of the generalized viscoplastic fluid (GVF) model in light of the established constitutive relations in two asymptotic flow regimes, namely, the macroviscous and grain-inertia regimes. A comprehensive review of the literature on constitutive relations in both regimes reveals that except for some material constants, such as the coefficient of restitution, the normalized shear stress in both regimes varies only with the grain concentration, C. It is found that Krieger-Dougherty's relative viscosity, ??*(C), is sufficiently coherent among the monotonically nondecreasing functions of C used in describing the variation of the shear stress with C in both regimes. It not only accurately represents the C-dependent [...]

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local-index unknown 70020718
local-pk unknown 70020718
series unknown Journal of Engineering Mechanics

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journalJournal of Engineering Mechanics
parts
typevolume
value124
typeissue
value3
languageEnglish
citationTypeArticle

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