Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"Preferential pathways"”.
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Bench-scale modeling to evaluate the mechanical effects of subsidence on a monofill-type landfill cover
… consistent raveling, with distinct, continuous preferential pathways for saturated fluid flow and vapor migration formed. (Abstract shortened by UMI.).
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Coupled Hydro-Mechanical Modelling of Gas Migration in Saturated Bentonite
… as gas breakthrough phenomenon, development of preferential pathways, build-up of water pressure and total stress, nearly saturated state after gas injection test, localized consolidation, water exchange between clay matrix and developed fractures and self-sealing process. These experimentally …
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Evaluation of sewer leakage into the stormwater drainage system in Singapore
… was conducted near a hot spot to determine if pathways exist between the sewer system and the stormwater drains. It was shown that sewers near building connections can leak into the stormwater drains, probably through preferential pathways such as concrete cracks or soil macropores. Sewage does …
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MONITORING INFILTRATION FROM NATURAL STORMS USING TIME-LAPSE ELECTRICAL RESISTIVITY TOMOGRAPHY
… wetting front even though the existence of preferential flow paths is well-documented in the literature. TL-ERT surveys were collected perpendicular to a stream at the Stroud Water Research Center in Chester County, PA to provide continuous measurement of unsaturated flow during two natural …
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Interplay of flow and microstructure in complex fluids: Semiflexible polymer solutions and emulsions
… The rate of decay of uncollapsed states, the preferential pathways of condensation, and the likelihood and lifespan of the different metastable states are analyzed. The collapsed states are described quantitatively through the spatial correlation of tangent vectors along the chain. The …
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Numerical Modeling and Simulation of Mineral Dissolution in Fractured Carbonate Formations
… Such a dissolution process could form the preferential pathways to cause a failure of waterflooding and GCS due to the early breakthrough of the displacing fluid and CO2 leakage, and it could also dramatically affect the efficiency of the matrix acidizing treatment due to the different …
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Laser Powder Bed Fusion Additive Manufacturing of Fe-based Shape Memory Alloys for Biomedical Applications
… increasing grain-boundary density and providing preferential pathways for localised attack. The unique cellular structure also helps improve the corrosion rate due to the Mn/Si segregation along the boundary. Furthermore, compression-compression fatigue performance under physiological loading …
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An experimental and modeling synthesis to determine seasonality of hydraulic redistribution in semi-arid region with multispecies
… (HR), a phenomenon that roots serve as preferential pathways for water movement from wet to dry soil layers. HR process is simulated by multi-layer canopy model (MLCan) and compared with relative measurements from the field to study effect of HR on different plant species where Posopis …
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Preferential flow in vertically oriented, unsaturated soil layers
Preferential flow paths develop where particular areas of a geologic profile become more conductive than the surrounding material. Research has been conducted in recent years on preferential flow and the flow of water through unsaturated soils. Unfortunately, the research has been completed by …
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River bifurcations: key processes, timescales and evolutionary trajectories
… on deltaic bifurcations help to understand the preferential pathways for sediment transport in river deltas, with noteworthy implications for delta management.
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Processes controlling the behavior of LNAPLs at groundwater surface water interfaces
… with LNAPL. Early failure was attributed to preferential pathways and slow water drainage. Adding vertical baffles and vertical coarse-grained drains improved the efficacy of organoclay barriers. Fractions of the clay contacted at breakthrough were 43% and 34%, respectively, for baffles and …
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Coupled Electromechanical Peridynamics Modeling of Strain and Damage Sensing in Carbon Nanotube Reinforced Polymer Nanocomposites
… the piezoresistive response since it affects the preferential pathways of current density depending on the relative ease of flow through grain vs. binder. The results of this work are promising and are two fold. Peridynamics is found to be an effective method to model such materials, both at the …