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 42 for “"Open channels"”.
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Low flow mixing in open channels
In problems involving water quality and pollution in natural streams under low flow conditions, during which pollution problems are most acute, a complete understanding of the effects of variations of flow and channel geometry on mixing and transport of polluted releases is necessary to establish …
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Spatial Variability in Seepage from Unlined, Open Channels
… toward estimating seepage losses from unlined channels.Comparison of numerical models showed that a 1D model can be useful when a simple, comparatively low-cost estimate of seepage from streambed temperature data is desired and streambed heterogeneity is not a concern. However, the assumption …
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Nondimensional approach to the design of open channels with spatially varied flow
… which describes the flow profile in rectangular channels with spatially varied flow. This equation is solved for various slopes and rates of discharge. The results show that when the slope and roughness are constant the dimensionless profiles are also constant over a very wide range of discharge. …
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Transformation of wave characteristics in the reflection-transmission process through open channels of varying geometry.
Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1966. Ph.D.
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Experimental and numerical analysis of thermoelectric magnetohydrodynamic driven liquid lithium flow in open channels for fusion applications
… lithium flow within horizontally placed metallic open trenches when an external magnetic field is transverse to the trench walls. Experiments at the University of Illinois have yielded experimental lithium velocities of 0.22±0.03 m/s under a magnetic field of 0.059T, and a similar experiment on …
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An experimental investigation of a method of measuring the velocity of water in open channels by means of a moving vane
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1914.
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Three-Dimensional Analysis of Boundary Layers in Magnetohydrodynamic Open Channel Flow
The pumping of liquid metals through open channels by MHD effects can be applied to slag separation or continuous casting processes by the metallurgy industry. This study involves the analysis of the boundary layer structure of non-uniform open channel flow in a rectangular channel, with perfectly …
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The Cultural-Social Benefits of Developing Green Channels: Case Studies and Demonstration in Jeddah City, Saudi Arabia
… time." Milenko Matanovic Constructing concrete open channels can provide a quick, efficient solution to help prevent an area from flash floods and water accumulation. However, such a solution does not take into consideration the increased land needs for housing and public open spaces, in …
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Facilitating communication about death between mothers and adolescent sons using fictional children's literature
… provide understanding about grief and death and open channels of communication. Although the use of bibliotherapy is gaining popularity, little research exists about its efficacy. Utilizing the book The Bridge to Terabithia, this study evaluated the facilitation of communication about death …
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Verification of Go Channels
… extension of Coq. However, Goose did not support channels, which are an important synchronization tool that Go is well known for. This thesis presents an extension to Goose to support channels, including a model to represent Go channels and operations in GooseLang, the language defined in …
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Turbulence models for non-circular ducts and channels
… is on fully-developed flows in closed ducts and open channels of various cross-sectional geometries. Two different turbulence models were evaluated: a complete Reynoldsstress- transport model and a two-equation k-f model used in conjunction with a nonlinear stress-strain relationship. Detailed …
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A finite element approach to open channel flow
… the propagation of hydraulic jumps and bores in open channels. It uses the basis function to weight the temporal terms and an asymmetric weighting function to weight the convection terms. The scheme has been improved with routines that both apply the asymmetric weighting function only in the …
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Statistical Properties of Transmission Spectra of Ergodic Wave Billiards: Random Hamiltonian Approach
… body coupled to a waveguide, i.e. in an open ergodic system. A simple model predicts a Porter-Thomas-like distribution of level widths and corresponding nonexponential dissipation, a behavior largely confirmed by measurements. For the case of fully open channels, however, measurements …
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Velocity distribution prediction in rectangular and compound channels under smooth and rough flow conditions
… of velocity distributions in single and compound open channels. In this study, velocity distributions in rectangular and compound open channels under different flow regimes, in terms of roughness and turbulence conditions, were investigated experimentally and numerically. The detailed results from …
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Sodium channel regulatory mechanisms : current fluctuation analysis on frog skin epithelium
… mechanisms of the amiloride-sensitive Na⁺ channels in isolated frog skin epithelium. The epithelium from ventral frog skin is a model tissue which has proved significant in our understanding of the basic principles involved in water and Na⁺ homeostasis. In particular, this project examines …
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A finite element model to determine the effect of land-use changes on flood hydrographs
… equations of one-dimensional transient flow in open channels. A one-dimensional finite element scheme was used to simulate overland flow over the watershed and open channel flow in the main streams, after a finite element grid had been devised for both the watershed and the streams. Rainfall …
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The De Saint-Venant equations in curved channels
… in the context of meandering natural channels, this thesis then describes the three conventional models for unsteady flow in open channels, namely kinematic, diffusion and dynamic. These descriptions are in terms of the straight channel de Saint-Venant equations. The discussion also …
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