Index Catalog // ScholarsArchive@OSU

Tracer experiments in a non-uniform porous medium : implications of diffusive mass transfer on the late-time breakthrough behavior

Creator:: Freiherr von Schwerin, Claudius
Abstract:: Mass transfer processes were evaluated in an artificial, non-uniform porous medium with a power law distribution of diffusion rate coefficients obtained from physical characterization of solute and porous medium. Breakthrough curves of several pulse experiments conducted at different velocities were compared (1) to analytical expressions for concentrations at mass transfer...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Claudius Freiherr von Schwerin for the degree of Master of Science in

What controls the apparent timescale of solute mass transfer in aquifers and soils? A comparison of experimental results

Creator:: Haggerty, Roy, Harvey, Charles F., von Schwerin, Claudius Freiherr, and Meigs, Lucy C.
Abstract:: Estimates of mass transfer timescales from 316 solute transport experiments reported in 35 publications are compared to the pore-water velocities and residence times, as well as the experimental durations. New tracer experiments were also conducted in columns of different lengths so that the velocity and the advective residence time could...
Resource Type:: Article
Full Text:: . Harvey,2 Claudius Freiherr von Schwerin,1,3 and Lucy C. Meigs4 Received 13 September 2002; revised 26

Flow and transport when scales are not separated: Numerical analysis and simulations of micro- and macro-models

Creator:: Peszynska, Malgorzata, Showalter, Ralph E., and Yi, Son -Young
Abstract:: In this paper, we consider an upscaled model describing the multiscale flow of a single-phase incompressible fluid and transport of a dissolved chemical by advection and diffusion through a heterogeneous porous medium. Unlike traditional homogenization or volume averaging techniques, we do not assume a good separation of scales. The new...
Resource Type:: Article
Full Text:: stability analysis of our numerical methods for the upscaled model. First, we perform von-Neumann analysis

Multiscale elliptic-parabolic systems for flow and transport

Creator:: Peszyńska, Malgorzata and Showalter, Ralph E.
Abstract:: An upscaled elliptic-parabolic system of partial differential equations describing the multiscale flow of a single-phase incompressible fluid and transport of a dissolved chemical by advection and diffusion through a heterogeneous porous medium is developed without the usual assumptions of scale separation. After a review of homogenization results for the traditional...
Resource Type:: Article

Decomposition of absorption coefficients and decorrelation lengthscales of hydrographic and inherent optical properties in the Middle Atlantic Bight

Creator:: Simeon, Jennifer J.
Abstract:: This investigation is an exploration of the use of inherent optical properties towards further elucidation of coastal circulation processes occurring on the continental shelf and slope in the Middle Atlantic Bight, south of Cape Cod Massachusetts, during 14-Aug to 1-Sep 1996 and 25-Apr to 15-May 1997. Assessing the possibility of...
Resource Type:: Masters Thesis
Full Text:: , Claudia Mengelt, Claudius Freiherr Von Schwerin, Carrie Mock, Bertrand Dano and Guil- laume Vernieres

The Effects of Layered Differences in Hydraulic Conductivity of Groundwater : An Estimation of Residence Time for Solute Transport

Creator:: McCarthy, Alexander J.
Abstract:: In order to determine how contaminants from pharmaceutical, agriculture, and industry will move through groundwater systems, it is imperative to further our understanding of the relationship between physical, biological, and chemical properties of aquifers and transport and transformation of these products. Several studies have explored how heterogeneities in groundwater systems...
Resource Type:: Masters Thesis

Correspondence between one- and two-equation models for solute transport in two-region heterogeneous porous media

Creator:: Davit, Y., Wood, B. D., Debenest, G., and Quintard, M.
Abstract:: Abstract In this work, we study the transient behavior of homogenized models for solute transport in two-region porous media. We focus on the following three models: (1) a time nonlocal, two-equation model (2eq-nlt). This model does not rely on time constraints and, therefore, is particularly useful in the short-time regime,...
Resource Type:: Article

Hydro-biogeochemical coupling at the hillslope and catchment scale

Creator:: van Verseveld, Willem J.
Abstract:: The specific objectives of this dissertation are to determine subsurface flow behaviors across different antecedent wetness conditions from a top-down perspective and to mechanistically assess the hydrological controls on DOC and N transport at the hillslope and catchment scale. The study area is a small catchment where hillslopes issue directly...
Resource Type:: Dissertation
Full Text:: . Hedin, L. O., Fischer, von, J. C., Ostrom, N. E., Kennedy, B. P., Brown, M. G., and G. P. Robertson

A preliminary assessment of hydrogeologic suitability for Aquifer Storage and Recovery (ASR) in Oregon

Creator:: Woody, Jen
Abstract:: An ASR metric and site rating index applied to over 120 municipal and agricultural locations across Oregon, combined with comparison to case study data from existing ASR sites, indicate that more than 50% of selected sites are hydrogeologically suitable for ASR. The ASR metric is a ratio of aquifer storage...
Resource Type:: Masters Thesis

Reactive transport modeling in a discrete fracture : applications to the formation of sericitic hydrothermal alteration at Butte, Montana

Creator:: Geiger, Sebastian
Abstract:: A model for the spatial and temporal evolution of the gray sericitic (GS) and sericite with remnant biotite (SBr) hydrothermal alteration selvages within the Butte Quartz Monzonite (BQM) of the porphyry copper deposit at Butte, Montana, is presented. The model provides a mathematical description for the location and advance of...
Resource Type:: Masters Thesis
Full Text:: , Nicolai Thurn, Claudius von Schwerin, Carrie Mock, Jennifer Simeon, Francois Baratange, Renellys Perez

ScholarsArchive@OSU

Tracer experiments in a non-uniform porous medium : implications of diffusive mass transfer on the late-time breakthrough behavior

What controls the apparent timescale of solute mass transfer in aquifers and soils? A comparison of experimental results

Flow and transport when scales are not separated: Numerical analysis and simulations of micro- and macro-models

Multiscale elliptic-parabolic systems for flow and transport

Decomposition of absorption coefficients and decorrelation lengthscales of hydrographic and inherent optical properties in the Middle Atlantic Bight

The Effects of Layered Differences in Hydraulic Conductivity of Groundwater : An Estimation of Residence Time for Solute Transport

Correspondence between one- and two-equation models for solute transport in two-region heterogeneous porous media

Hydro-biogeochemical coupling at the hillslope and catchment scale

A preliminary assessment of hydrogeologic suitability for Aquifer Storage and Recovery (ASR) in Oregon

Reactive transport modeling in a discrete fracture : applications to the formation of sericitic hydrothermal alteration at Butte, Montana

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