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David Andrew Barry

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Related publications (225)

pH control for enhanced reductive bioremediation of chlorinated solvent source zones

Enhanced reductive dehalogenation is an attractive treatment technology for in situ remediation of chlorinated solvent DNAPL source areas. Reductive dehalogenation is an acid-forming process with hydrochloric acid and also organic acids from fermentation o ...

Elsevier2009

Effect of nonuniform boundary conditions on steady flow in saturated homogeneous cylindrical soil columns

David Andrew Barry

Laboratory column experiments involving steady flow in homogeneous soil are often analyzed assuming that the flow is spatially uniform in any plane transverse to the longitudinal axis aligned with the column centerline. Axisymmetric steady flow in such a c ...

2009

Tidal influence on BTEX biodegradation in sandy coastal aquifers

David Andrew Barry, Alessandro Brovelli, Clare Robinson

A numerical study was conducted to investigate the influence of tides on the fate of terrestrially-derived BTEX discharging through an unconfined aquifer to coastal waters. Previous studies have revealed that tide-induced seawater circulations create an ac ...

2009

Two-phase hydrodynamic and sediment transport modeling of wave-generated sheet flow

David Andrew Barry, Roham Bakhtyar

This numerical investigation was carried out to advance mechanistic understanding of sediment transport under sheet flow conditions. An Euler-Euler coupled two-phase flow model was developed to simulate fluid-sediment oscillatory sheet flow. Since the conc ...

Elsevier2009

Vision-based system for the control and measurement of wastewater flow rate in sewer systems

Luca Rossi, Daniel Sage, Laurent Son Nguyen, Salim Kayal, David Andrew Barry

Combined sewer overflows and stormwater discharges represent an important source of contamination to the environment. However, the harsh environment inside sewers and particular hydraulic conditions during rain events reduce the reliability of traditional ...

IWA Publishing2009

Modeling U(VI) biomineralization in single- and dual- porosity porous media

David Andrew Barry

Uranium extraction, processing and storage have resulted in a legacy of uranium-contaminated groundwater aquifers worldwide. An emerging remediation technology for such sites is the in situ immobilization of uranium via biostimulation of dissimilatory meta ...

American Geophysical Union2008

Influence of sediment settling velocity on mechanistic soil erosion modeling

Marc Parlange, David Andrew Barry

We report on a series of soil erosion experiments performed on the 2-m x 6-m EPFL erosion flume. Total sediment concentrations and the concentrations of seven size fractions (1000 mm) were measured during 1 ...

American Geophysical Union2008

Prediction of Longshore Sediment Transport Using Soft Computing Techniques

David Andrew Barry, Roham Bakhtyar

An important task for coastal engineers is to predict the sediment transport rates in coastal regions with correct estimation of this transport rate, it is possible to predict both natural morphological or beach morphology changes and the influence of coas ...

American Society of Mechanical Engineers2008

Erratum to “Similarity solution of axisymmetric flow in porous media” [Advances in Water Resources, 28 (2005) 1076- 1082]

Marc Parlange, David Andrew Barry

Elsevier2008

Parameter and process significance in mechanistic modeling of cellulose hydrolysis

David Andrew Barry

A process-based model relevant to landfill and anaerobic digesters was developed, which included a novel approach to biomass transfer between a cellulose-bound biofilm and biomass in the bulk liquid. Model results highlighted the significance of the bacter ...

Elsevier2008

Effect of wellbore storage and finite thickness skin on flow to a partially penetrating well in a phreatic aquifer

David Andrew Barry

An analytical model is presented for the analysis of constant flux tests conducted in a phreatic aquifer having a partially penetrating well with a finite thickness skin. The solution is derived in the Laplace transform domain for the drawdown in the pumpi ...

2008

Reactive transport in unsaturated Soil: Comprehensive modelling of the dynamic spatial and temporal mass balance of water and chemical components

David Andrew Barry, Laurin Wissmeier

By implementing the moisture-based form of Richards' equation into the geochemical modelling framework PHREEQC, a generic tool for the simulation of one-dimensional flow and solute transport in the vadose zone undergoing complex geochemical reactions was d ...

2008

Analytical approximations for flow in compressible, saturated, one-dimensional porous media

David Andrew Barry

A nonlinear model for single-phase fluid flow in slightly compressible porous media is presented and solved approximately. The model assumes state equations for density, porosity, viscosity and permeability that are exponential functions of the fluid (eith ...

2007

Limitation of the transport capacity approach in sediment transport modeling

Marc Parlange, David Andrew Barry

In a recent paper by Polyakov and Nearing (2003) it was shown experimentally that the sediment transport capacity in a rill is not unique for a given soil type, slope, and flow rate. Indeed, they found that the transport capacity was dependent on whether s ...

American Geophysical Union2007

Anaerobic biodegradation of linear alkylbenzene: Isomeric ratio as a monitoring tool

David Andrew Barry

Linear alkylbenzenes (LABs) are common environmental contaminants associated with a range of industrial and domestic activities. Although natural environments receiving LABs may exhibit a range of redox conditions, until now only aerobic biodegradation of ...

2007

Effect of tidal forcing on a subterranean estuary

David Andrew Barry, Clare Robinson

Groundwater flow and chemical transport in subterranean estuaries are poorly understood despite their potentially important implications for chemical fluxes from aquifers to coastal waters. Here, a numerical study of the dynamics in a subterranean estuary ...

2007

Acute toxicity of linear alkylbenzene to Caenorhabditis elegans Maupas, 1900 in soil

David Andrew Barry

2007

Numerical modeling of tidal influence on density-dependent contaminant transport

David Andrew Barry, Alessandro Brovelli

Transport of contaminants in coastal aquifers subject to tidal fluctuation is an important topic in hydrogeology as a consequence of the significant development of human activities near the shoreline. Despite this, relatively little work has been done to i ...

American Geophysical Union2007

Tidal influence on behaviour of a coastal aquifer adjacent to a low-relief estuary

David Andrew Barry

The tidal influence on groundwater hydrodynamics, salt- water intrusion and submarine groundwater discharge from coastal/estuarine aquifers is poorly quantified for systems with a mildly sloping beach, in contrast to the case where a vertical beach face is ...

2006

ENSO forcing on climate change in Iran: Precipitation analysis

David Andrew Barry

An investigation was conducted to detect the change-point years in the Southern Oscillation Index (SOI) and precipitation time series in Iran for the period 1951-1999 (49 years). Due to the unavailability of data, the record length of the precipitation tim ...

2006

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