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 20 of 31 for “"Hydraulic Characteristics"”.
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Hydraulic characteristics of siphonic roof drainage outlets
Siphonic roof drainage uses an innovative hydraulic design to increase the efficiency ofrainwater disposal. The roof outlet is a critical component of the system and not onlypromotes and sustains priming of the system but also controls the depth of approachflow. This thesis investigates the …
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The hydraulic characteristics of channels with overbank flood plain flow
Summary available: p. ii
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INVESTIGATION OF THE HYDRAULIC CHARACTERISTICS OF COASTAL REDWOODS THROUGH ANALYSIS OF WATER DYNAMICS
… prominent when the tree is challenged by the hydraulic limitations of being tall. In this case, the tree’s hydraulic design can provide basic and energy efficient mechanisms for the tree to manage water well. The hydraulic design is based on the physiological and architectural properties of …
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Hydraulic Characteristics and Nutrient Degradation Kinetics of a Horizontally Orientated Subsurface Flow Biofilter
Polluted runoff from densely populated and poorly serviced informal settlements is a growing issue in South Africa that leads to various health risks and environmental degradation. Surface waters affected by informal settlements are known to display high nutrient (NH3, NO2 - , NO3 - and PO4 3- ) …
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Determining Hydraulic Characteristics in Close Proximity of Hymenocallis coronaria within the Flint River Basin, Georgia
… to grow and reproduce. The influence of hydraulic characteristics on plant morphology is significant within fluvial systems. Macrophytes must be able to withstand swift flowing water and changes in water surface levels in order to compete with other plant species for limited habitat …
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Modeling of sulfide emission from the Virginia sewer system
… required both an understanding of the flow hydraulics in this sewer environment, and a model (kinetic equation) for hydrogen sulfide emission in terms of the flow characteristics. This thesis presents the relevant theory for predicting hydraulic characteristics (including velocity gradient, …
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Adiabatic Air-Water Two Phase Flow Experimental Facilities Design, Construction and Operation
… facility is robust under criticism. Thermal hydraulic characteristics of air-water two-phase flows in a vertical tube (poly-dispersed) and also annulus (mono-dispersed) have been subjected to be studied in detail. The hydrodynamics modeling and simulations need a detailed comparison and …
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Constructed Floodplain Wetland Effectiveness for Stormwater Management
… wetland (CW) water budget, 2) estimate wetland hydraulic characteristics during overbank flows, and 3) quantify the event-scale nutrient assimilative capacity of the constructed wetland. CW water table elevations and hydraulic gradients were measured through an array of nested piezometers. …
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Tracer studies of inlet baffle performance in a horizontal rectangular settling tank model
… to give more detailed information regarding the hydraulic characteristics of the model system tested. The model study results indicated that a 6-inch horizontal rectangular inlet baffle, positioned 8 inches from the inlet pipe, gave better performances than the other baffles tested.
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Environmental factors and the water regime of De Hoop Vlei
… rainfall data. As background to the study the characteristics of the De Hoop catchment have been documented. This information was not previously available and provides an essential basis for further study of conditions in De Hoop Vlei. It is found that whilst large differences in runoff may …
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Hydraulic Design of Interlocking Concrete Permeable Pavement
… are presented in Amanda Leipard’s 2015 Thesis, “Hydraulic Characterization of Permeable Interlocking Concrete Pavement”. The results found the horizontal infiltrate rate for each variation lower than the corresponding vertical infiltration rate. A computational design tool was built for PICP …
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Stochastic analysis of dense nonaqueous phase liquid dissolution in naturally heterogeneous subsurface systems
… performed for the large spatial variability of hydraulic and dissolution parameters. The extrapolation is evaluated using a unique two-zone model that simplifies the continuous DNAPL distribution to two components: low permeability lens zone with high DNAPL saturation and a surrounding permeable …
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Comparison of Hydraulic Function and Channel-Floodplain Connectivity Between Actively and Passively Restored Reaches of Stroubles Creek 11 Years After Restoration
A hydraulic model was developed to determine differences in the hydraulic characteristics of three different reaches of an urban- and agriculturally-impacted stream in southwest Virginia. The three reaches all had cattle excluded from the channel in 2010. The farthest upstream, Treatment 1, was …
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Hydraulic Modeling of a River Network for Predicting Flood Inundation using HEC-RAS and GIS Models - A Case Study in Southern Virginia
… coefficient. Finally, the impact of various hydraulic characteristics of the modeled river on the sediment transport process is examined. This characterization is intended to provide a better understanding of a subsequent sediment transport modeling effort to be performed under severe …
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Computational fluid dynamics modeling and comparison of advanced techniques for heat transfer augmentation for nuclear applications
… The present research investigated thermo-hydraulic characteristics of natural and forced convection of water under different configurations of twisted tape inserted in tube as well as NuScale rod bundles for uniform wall heat flux using computational fluid dynamics (CFD) using ANSYS Fluent …
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Hydrogeology and recharge of the Split Rock Creek Aquifer, southeastern South Dakota
… and stable isotope analyses, and determining the hydraulic characteristics of the aquifer and confining layers through aquifer and baildown tests. </p><p> Results indicate that the Split Rock Creek aquifer exists in paleo-valleys in the highly fractured Precambrian Sioux Quartzite. Aquifer …
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The hydrogeological structure of fault zones in poorly lithified sediment, Gulf of Corinth rift
… indicate such fault zones should behave as hydraulic barriers, but hydrological observations indicate they behave as conduit-barriers. This thesis investigates the hydrogeological structure of fault zones cutting poorly lithified sediment to better understand the observed conduit-barrier …
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Development of risk-based groundwater operating rules: a case study of Siloam Village, South Africa
… aquifer models and test solutions for estimating hydraulic characteristics (storativity, transmissivity and hydraulic conductivity) based on Aquifer Test Solver (AQTESOLV) Pro version 4.5. Limited groundwater levels and rainfall data were infilled and/or extended using Output Error-Nonlinear …
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