Determination of permeability anisotropy in a two-way permeameter. Technical note

Moore, Peter J.

doi:10.1016/0148-9062(81)90348-x

Cited by 2 publications

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“…The vertical permeability can be measured using the falling head and constant head setups as presented by Lindly and Elsayed [1], Richardson [2], Fwa et al [3], and Huang et al [4]. The horizontal permeability, on the other hand, was measured by Wit [5], Latini [6], Moore [7], and Pare [8].…”

Section: Introductionmentioning

confidence: 99%

Three dimensional simulation of fluid flow in X‐ray CT images of porous media

Al-Omari¹,

Masad²

2004

Num Anal Meth Geomechanics

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SUMMARYA numerical scheme is developed in order to simulate fluid flow in three dimensional (3-D) microstructures. The governing equations for steady incompressible flow are solved using the semi-implicit method for pressure-linked equations (SIMPLE) finite difference scheme within a non-staggered grid system that represents the 3-D microstructure. This system allows solving the governing equations using only one computational cell. The numerical scheme is verified through simulating fluid flow in idealized 3-D microstructures with known closed form solutions for permeability. The numerical factors affecting the solution in terms of convergence and accuracy are also discussed. These factors include the resolution of the analysed microstructure and the truncation criterion. Fluid flow in 2-D X-ray computed tomography (CT) images of real porous media microstructure is also simulated using this numerical model. These real microstructures include field cores of asphalt mixes, laboratory linear kneading compactor (LKC) specimens, and laboratory Superpave gyratory compactor (SGC) specimens. The numerical results for the permeability of the real microstructures are compared with the results from closed form solutions.

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Section: Introductionmentioning

confidence: 99%

Three dimensional simulation of fluid flow in X‐ray CT images of porous media

Al-Omari¹,

Masad²

2004

Num Anal Meth Geomechanics

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“…For example, Moore [1979] and Yasuike et al [1987] proposed methods for measuring hydraulic conductivity in two directions on cubic soil samples. Both of the proposed methods are labor intensive and require significant manipulation and handling of the samples.…”

Section: Introductionmentioning

confidence: 99%

Measurement of anisotropic hydraulic conductivity in unconsolidated sands: A case study from a shoreface deposit, Oyster, Virginia

Burger¹,

Belitz²

1997

Water Resources Research

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Abstract. In this study an integrated field and laboratory method which can be used to evaluate the magnitude and distribution of anisotropic hydraulic conductivity at the scale of bedding structures in unconsolidated sediment is demonstrated. Undisturbed sediment cores 10.16 cm in diameter and 18.25 cm long are obtained using a split-barrel core sampler. Two undisturbed 5.72 cm diameter (7.90 cm long) subcores, oriented parallel and perpendicular to the primary bedding structures, are then obtained from each field core; the hydraulic conductivities of the subcores are then measured with a constant-head permeameter. The sampling and experimental procedures are designed to minimize potential sources of error. Sixty-four 10.16 cm cores were sampled in a coastal sand outcrop located -300 rn from a subsurface injection experiment near Oyster, Virginia. Four distinct lithologies were sampled in horizontal transects with a spacing of 0.5 rn between core locations. In addition, iron oxide bands which were prevalent throughout the exposure were sampled from both ends of the outcrop. The average hydraulic conductivity values are consistent with the observable geologic features (grain size, sorting, and iron oxide banding). Hydraulic conductivity is greater in the parallel-oriented subcore for 90% of the core pairs, and mean hydraulic conductivity ratios of parallel to perpendicularoriented subcores (K,/Kñ) for the different lithologies ranged from 1.33 to 1.57. The major control on the anisotropy in this sediment is interpreted to be preferential grain orientations resulting from depositional processes, with additional influences from the prominence of the bedding structures and secondary features such as hydrous iron oxide banding.

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Determination of permeability anisotropy in a two-way permeameter. Technical note

Cited by 2 publications

References 0 publications

Three dimensional simulation of fluid flow in X‐ray CT images of porous media

Three dimensional simulation of fluid flow in X‐ray CT images of porous media

Measurement of anisotropic hydraulic conductivity in unconsolidated sands: A case study from a shoreface deposit, Oyster, Virginia

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