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 16 of 16 for “"saturated flow"”.
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Boundary modeling of saturated flow during steady application of municipal effluent in a subsurface irrigation and drainage field
… Modeling was used to analyze the subsurface flow of treated sewage effluent from a subirrigation line to a subsurface drain line. This type of flow exists at the wastewater treatment facility at Tuscola, Illinois, where it is used to augment a central-pivot sprinkler system of wastewater …
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Rainfall-runoff control: variably saturated transport for an infiltration system controlling water quality and quantity
… significantly. Rainfall-runoff volume and peak flow were reduced and time to peak was extended. Influent dm/dp ratios based on particle analyses suggest that the dominant PER particle separation mechanisms were physical-chemical filtration with the CPP layer functioning as a straining surface. …
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Infrared Thermometry Analysis of Surface Effects in Subcooled and Saturated Boiling of Water
In this work, the dynamics of subcooled and saturated flow boiling are studied, focusing on the influence of surface characteristics, visualized through advanced diagnostics capturing micro-scale phenomena. Utilizing specially crafted thin-film infrared heaters, we measured bubble dynamics …
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Effect of Climate Change on Slope Stability of Variably Saturated Embankments Using Local Factor of Safety and In-Situ Stress Finite Element Analysis
… stress finite element analysis and variably saturated flow analysis. In this method, the effect of moisture content variation on the effective stress is taken into account using suction stress state.
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Forward modelling and inversion of streaming potential for the interpretation of hydraulic conditions from self-potential data
… data. To enable the study of variably saturated flow problems of complicated geometry, a three-dimensional finite volume algorithm is developed to evaluate the self-potential distribution resulting from subsurface fluid flow. The algorithm explicitly calculates the distribution of …
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Effect of atmospheric variations on subsurface flow and transport
… effect of atmospheric variations on subsurface flow and transport at the proposed high level waste repository at Yucca Mountain, Nevada. The conditions of subsurface transport were simulated with NUFT (Nonisothermal Unsaturated-Saturated Flow and Transport model) modeling software developed by …
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Numerical modelling of transport of pollutant through soils
… contaminant through soils involves analyses of unsaturated and saturated flow of water and advective dispersive transport of contaminant species. A finite element model is developed here for such an analysis. It is based on the transient nonlinear Richard's equation for the unsaturated flow and …
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Numerical Examination of Flow Field Characteristics and Fabri Choking of 2D Supersonic Ejectors
… the operating conditions which produce the saturated, Fabri choke and Fabri block aerodynamic flow patterns. The effect of primary to secondary stagnation pressure ratio on the efficiency of the ejector operation is measured using the entrainment ratio which is the secondary to primary mass …
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Higher-order effects on flow and transport in randomly heterogeneous, statistically anisotropic porous media
… is presented for steady state, mean uniform saturated flow and nonreactive solute transport in randomly homogeneous, statistically anisotropy natural log hydraulic conductivity fields Y. General integral expressions are derived for the spatial covariance of fluid velocity to second order in …
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Properties governing the flow of solution and air through crushed ore for heap leaching
… Although much research has been published on the flow of solution and air through sand, little has been published on the hydrology of coarser rocks. Physical and hydraulic testing of rocks and agglomerates is often incorporated as a part of heap leach design, however, much still relies on …
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Solute dispersion in selected tropical soils
… Hawaiian soils through a specially designed flow apparatus. Observed differences in the dispersion of these solutes for the range of velocities tested were attributed to differences in ion adsorption capacity and pore geometry. Tritium showed negligible interaction with these soils and was …
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Establishment & Assessment of the Macroscopic Fundamental Diagrams for the City of Durban Freeway Network Using Empirical Data
The history of traffic flow studies dates to the years between the 1960s and 1970s. This paper reviews the history of traffic flow studies in the context of Macroscopic Fundamental Diagrams (MFD) to date. The recent findings have shown that understanding the Macroscopic Fundamental Diagrams (MFD) …
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The mechanisms of moisture ingress & migration in rammed earth walls.
… in good agreement with existing theories on non-saturated flow theory.Moisture ingress in rammed earth is generally very low and typically equal to or less than that of vibration-compacted C30 concrete. A positive relationship exists between the rate of capillary suction and the volume fraction …