Streamline routing through fracture junctions

Hull, L.C.; Koslow, Karen N.

doi:10.1029/wr022i012p01731

Cited by 53 publications

(34 citation statements)

References 3 publications

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“…Previous studies of contaminant transport through fracture intersections have generally focused on the two-dimensional (2D) case of intersecting parallel plate fractures [Hull and Koslow, 1986;Stockman et al, 1997;Berkowitz: et al, 1994]. Two end-member mixing cases are streamline routing [Hull and Koslow, 1986] and complete mixing.…”

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confidence: 99%

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Experimental mixing variability in intersecting natural fractures

Johnson

Brown

2001

Geophysical Research Letters

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Abstract. Laboratory experiments of flow through epoxy replicas of intersecting natural fractures show that solute transport deviates significantly from predictions of twodimensional streamline routing through parallel plate intersections. Surface roughness in intersecting fractures causes two major discrepancies between mixing experiments and the parallel plate predictions. First, the fluids exiting the intersection are not uniformly mixed, but consist of ribbons with varied solute concentrations which tend to follow streamlines in the flow. Some of these streams maintain a nearly pure inlet fluid composition as they exit the intersection and traverse the outlet fracture. Second, when the outlet fluids are collected and homogenized, we find that this complex redirection of streamlines within natural rough-walled fracture intersections results in more total mixing than is predicted by the parallel plate model.

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confidence: 99%

“…Two end-member mixing cases are streamline routing [Hull and Koslow, 1986] and complete mixing. The streamline routing model assumes that solute never crosses streamlines (molecular diffusion is negligible); in parallel-plate intersections, outlet concentrations de.…”

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confidence: 99%

Experimental mixing variability in intersecting natural fractures

Johnson

Brown

2001

Geophysical Research Letters

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“…In a discontinuous intersection, two inlets and two outlets are in alternating order; such intersections can appear in a network with multiple sources and sinks. On the other hand, continuous intersections have two adjacent inlets (and therefore two adjacent outlets) and are, in general, prevalent under natural flow conditions [ Hull and Koslow , 1986]. Figure 1a illustrates the simplest case of a continuous intersection with two adjacent inflow segments.…”

Section: Flow and Transport Through Single Intersectionsmentioning

confidence: 99%

Transport behavior in three‐dimensional fracture intersections

Park

Lee

Kosakowski

et al. 2003

Water Resources Research

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[1] Flow and transport patterns in three-dimensional fracture intersections are investigated, with emphasis on the occurrence and effects of local flows around each intersection. Flow and transport simulations indicate that local flow circulations (referred to as ''local flow cells'') arise because of an interplay between intersection geometry and corresponding boundary conditions for flow along the fracture boundaries. Local flow cells are thus unique features in three-dimensional fracture networks. The analysis here suggests that local flow cells have little effect on the overall fluid flow in a fracture network but may constitute an effective mechanism which contributes to the long breakthrough tailing and retardation often observed in transport through discrete fracture networks.

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“…Schwartz and Smith moved particles in deterministic and probabilistic steps, representing advection and dispersion, respectively. The degree of mixing at fracture intersections have been studied in laboratory and theoretical models [ Hull and Koslow , 1986; Hull et al , 1987; Philip , 1988; Robinson and Gale , 1990]. Both complete mixing for slow flows and no mixing for fast flows have been used in tracer transport models.…”

Section: Multiple Fracture Studiesmentioning

confidence: 99%

Flow and Transport in Fractured Rocks

Wang

1991

Reviews of Geophysics

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Laboratory‐scale studies of discrete fractures lead to better understanding of the relationship between flow properties and pore geometry. Field‐scale studies of fracture networks test the validity of classical continuum approaches for transport processes in heterogeneous media. During 1987 to 1990, earth scientists have made significant advances in quantifying flow channeling and solute breakthrough in rough‐walled fractures, analyzing transitions between fracture and matrix flows under multiphase conditions, and characterizing fracture networks with hydrological and geophysical studies. In this review, the effect of heterogeneity and the issue of scaling are discussed. Many common features and similiar approaches can be identified in microcracks, discrete fractures, soil macropores, fractured rock masses, and heterogeneous reservoirs at different scales.

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Streamline routing through fracture junctions

Cited by 53 publications

References 3 publications

Experimental mixing variability in intersecting natural fractures

Experimental mixing variability in intersecting natural fractures

Transport behavior in three‐dimensional fracture intersections

Flow and Transport in Fractured Rocks

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