Flow pattern variability in natural fracture intersections

Details Flow pattern variability in natural fracture intersections Flow pattern variability in natural fracture intersections

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.1765k&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 12, p. 1765-1768

Physics

Geophysics

7

Hydrology: Groundwater Hydrology, Mathematical Geophysics: Numerical Solutions, Physical Properties Of Rocks: Fracture And Flow

Scientific paper

We use numerical simulations to examine the variability of flow patterns in representative fracture intersection geometries. In contrast to existing studies of perfectly orthogonal intersections, we demonstrate that more realistic geometries lead to a rich spectrum of flow patterns. Moreover, numerical solutions of the Navier-Stokes equations in these fracture intersections indicate that non-linear inertial effects become important for Reynolds numbers as low as 1-100. Such Reynolds numbers often exist in naturally fractured formations, particularly in karst systems and in the vicinity of wells during pump tests.

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