Bingham Fluid Flow In Spatially Variable
Fractures
Author(s)
V. Di Federico & G. Bizzarri
Abstract
Non-Newtonian fluid flow in fractured media is of interest to hydrologists,
geophysicists, and mining engineers. Since laboratory and field investigations
evidence a strong degree of variability in fracture aperture, a large body of
literature is specifically concerned with evaluation of an equivalent aperture (or
permeability), adopting different constitutive equations and aperture variability
models. The equivalent aperture for non-Newtonian fluid flow is defined as the
parallel plate aperture which would permit a given volumetric flux under an
assigned pressure gradient, thereby generalizing the concept of hydraulic
aperture used for Newtonian flow. In this paper, the Bingham model with yield
stress τ0 has been adopted to describe the fluid rheology; the aperture is taken to
vary
Keywords
Related Book
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