Search Results - "Lenhard, Robert J."

Evaluation of LNAPL Behavior in Water Table Inter-Fluctuate Zone under Groundwater Drawdown Condition by Azimi, Reza, Vaezihir, Abdorreza, Lenhard, Robert, Hassanizadeh, S.

“…We investigate the movement of LNAPL (light non-aqueous phase liquid) into and out of monitoring wells in an immediate-scale experimental cell. Aquifer…”
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Predicting Vertical LNAPL Distribution in the Subsurface under the Fluctuating Water Table Effect by Boumaiza, Lamine, Chesnaux, Romain, Walter, Julien, Lenhard, Robert J., Hassanizadeh, Seyed M., Dokou, Zoi, Alazaiza, Motasem Y.D.

“…The present study proposes a methodology for predicting the vertical light nonaqueous‐phase liquids (LNAPLs) distribution within an aquifer by considering the…”
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Evaluating an Analytical Model to Predict Subsurface LNAPL Distributions and Transmissivity from Current and Historic Fluid Levels in Groundwater Wells: Comparing Results to Numerical Simulations by Lenhard, Robert J., Sookhak Lari, Kaveh, Rayner, John L., Davis, Greg B.

“…A recent analytical model predicts free, entrapped, and residual LNAPL saturations and the LNAPL transmissivity in the subsurface from current and historic…”
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Formation and Removal of Hydrocarbon Residual in Porous Media:  Effects of Attached Bacteria and Biosurfactants by Herman, David C, Lenhard, Robert J, Miller, Raina M

“…Column studies were used to investigate the fate of a representative nonaqeous-phase liquid (NAPL), hexadecane, with specific regard to (1) the effect of…”
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Changes in void distribution and volume during compaction of a forest soil by Lenhard, R.J

“…Bulk density and water retention measurements were conducted after 0, 1, 2, 4, 8, 16, and 32 trips with a rubber‐tired skidder on a forest soil whose surface…”
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Flow behavior and residual saturation formation of liquid carbon tetrachloride in unsaturated heterogeneous porous media by Oostrom, M, Hofstee, C, Lenhard, R.J, Wietsma, T.W

“…The formation of residual, discontinuous nonaqueous phase liquids (NAPLs) in the vadose zone is a process that is not well understood. To obtain data that can…”
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practical model for mobile, residual, and entrapped NAPL in water-wet porous media by White, M.D, Oostrom, M, Lenhard, R.J

“…Flow of nonvolatile nonaqueous phase liquid (NAPL) and aqueous phases that account for mobile, entrapped, and residual NAPL in variably saturated water-wet…”
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A constitutive model for air-NAPL-water flow in the vadose zone accounting for immobile, non-occluded (residual) NAPL in strongly water-wet porous media by Lenhard, Robert J., Oostrom, Mart, Dane, Jacob H.

“…A major shortcoming of multifluid flow simulators is the inability to predict the retention of nonaqueous phase liquid (NAPL)in the vadose zone after long…”
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Simple Method of Obtaining Su-Brooks Retention Parameters by Lenhard, Robert J, Cuenca, Richard H

“…The Su-Brooks retention function was linearized by transforming the functon into logarithmic form. The resulting equation had a form that allows determination…”
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Comparison of relative permeability-saturation-pressure parametric models for infiltration and redistribution of a light nonaqueous-phase liquid in sandy porous media by Oostrom, M., Lenhard, R.J.

“…To test and evaluate the ability of commonly used constitutive relations for multifluid flow predictions, results of numerical flow and transport simulations…”
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A constitutive model for air–NAPL–water flow in the vadose zone accounting for immobile, non-occluded (residual) NAPL in strongly water-wet porous media by Lenhard, R.J., Oostrom, M., Dane, J.H.

“…A hysteretic constitutive model describing relations among relative permeabilities, saturations, and pressures in fluid systems consisting of air,…”
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Effects of Clay-Solution Interactions on Water Retention by Lenhard, Robert J, Brooks, Royal H

“…Capillary pressure-saturation data were measured on unconsolidated porous media containing 40% montmorillonite, as a function of total electrolyte…”
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A constitutive model for air–NAPL–water flow in the vadose zone accounting for immobile, non-occluded (residual) NAPL in strongly water-wet porous media by Lenhard, R.J., Oostrom, M., Dane, J.H.

“…A hysteretic constitutive model describing relations among relative permeabilities, saturations, and pressures in fluid systems consisting of air,…”
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Special issue on multiphase flow and chemical transport introduction/editorial by Mayer, Alex S., Lenhard, Robert J.

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Comparison of liquid retention curves with polar and nonpolar liquids by Lenhard, R.J, Brooks, R.H

“…Capillary pressure‐saturation data obtained on unconsolidated porous media containing different clay minerals with different liquids are compared to evaluate…”
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