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Showing 1 to 18 of 18 for “"spillways"”.
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Side channel spillways
The design of side channel spillways has been discussed in detail by a number of investigators. In this thesis the most important works have been summarised, discussed and in some cases expanded in an attempt to give a concise account of the existing theories. Model tests were carried out on a side …
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An investigation to predict the sub-atmospheric pressure on high spillways
In the past few decades, spillways have attraction significant as flow measuring devices as well as for release of flood discharges for dams. Severe cavitation damage has occurred on many high spillways around the world, including Russia, Pakistan, Venezuela, and Iran. In Iran, this phenomena …
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Water surface profiles in side channel spillways : comparisons between computed and experimental values
… the water surface profiles found in side channel spillways. The classical method proposed by Hinds is investigated, with specific reference to the water surface slope equation. A literature review is given on the evolution of the theory, from the conceptual ideas of Hinds through to a systematic …
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The behaviour of Siphon Spillways, with particular reference to air entrainment and model scale effects
… in self-priming, air-controlled siphon spillways. The early chapters of the work provide the reader with the history and general design principles of siphon spillways as well as a comprehensive review of the research carried out to date in the field of air entrainment and air regulation …
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Origin and stratigraphy of Holocene sediments, Souris and Des Lacs glacial-lake spillways, north-central North Dakota
… of the Souris and Des Lacs glacial-lake spillways has been proposed. Now, based on geomorphological evidence, it is concluded that the Souris and Des Lacs Valleys were formed by massive glacial-lake outburst floods at the end of the late Wisconsinan deglaciation. Five phases of drainage …
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Influência dos vertedouros no comportamento estrutural de barragens-casca
… behaviour of arch dams, when the existence of spillways is considered. For this purpose, it was studied a dam with simple curvature (type I), with symetrical valley defined by the Institution of Civil Engineers (ICE), at ten different situations with respect to the number and the localization …
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Enhancing Spillway Efficiency Discharge Coefficients: Insights from Historical Models and Case Studies of Ogee, Lateral, and Non-Linear Structures
… including ogee, side-channel, and non-linear spillways. The datasets were normalised using dimensionless discharge coefficients and unit head ratios to allow consistent comparison across model scales and prototype conditions. Statistical trend analysis was applied to evaluate how observed …
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Effect of spillway-ogee location on flow uniformity and turbulence at the crest of an ogee weir
… These issues are especially of concern for spillways for which the approach flow to the ogee weir is relatively shallow. Circular and elliptical shapes of abutments were used. These abutment forms, and the bathymetry of the reservoir approach to the spillway, cause the approach flow to the …
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Probable maximum flooding using quantitative weather radar
Reservoir spillways are designed to pass extreme flood events without significant damage. For Category A dams in the UK (whereby a breach will endanger lives in a community), designs are based on the Probable Maximum Flood (PMF) arising from the critical duration Probable Maximum Precipitation …
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The geology of eastern Wells County, North Dakota
… Lake Souris in north-central North Dakota after spillways draining glacial Lake Souris had breached the Martin end moraine to the northwest. This channel was subsequently abandoned and formed the Sheyenne River diversion channel to the north. These diversion channels and Rocky Run and …
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Vibration Analysis of Single - Anchor Inflatable Dams
… and raising the height of existing dams or spillways. The vibration behavior of such dams is analyzed. Single-anchor inflatable dams with fins are considered. First, a static analysis is performed which yields the equilibrium shapes of the dam, both in the presence and absence of water. …
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Estudio experimental de cuencos amortiguadores en aliviaderos con cajeros altamente convergentes
… of usable reservoir or to increase the existing spillways. One way to increase them is to use the maximum length of the coronation as a spillway. This typology involves using a lateral overflow to collect the spill flow and to restore it to the stilling basin, usually narrower than the length of …
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Economic impacts and analysis methods of extreme precipitation estimates for eastern Colorado
… for estimating cost of modifications for spillways were developed. Among 162 high risk dams, the estimated total cost for modification was approximately $184 million. The economic value of this precipitation estimate is $9.45 million per inch change of rainfall in this limited study area. …
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Electromagnetic pump and hardware development for organs-on-chips
… In addition, we improve platform features using spillways which allow for better passive leveling of fluid height between MPSes. This thesis also presents the selection of polymer tubing to resolve condensation issues in pneumatic channels of an MPS platform inside a cell culture incubator.
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Sedimentology and Stratigraphy of Glacial Lake Souris, North Dakota: effects of a glacial-lake outburst
… trench-shape channels. Although glacial-lake spillways have been studied in detail, the effects of outbursts on downstream lakes have not. The purpose of this study was to demonstrate the effects of the Glacial Lake Regina outburst on the lake that received the flows, Glacial Lake Souris.</p> …
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Integrity Assessment Of Earthen Dams And Levees Using Cross-Plot Analysis Of Seismic Refraction And Electrical Resistivity Tomograms
… of the subsurface, structures such as principal spillways, artifacts of inversion software, or to a true compromised location, such as an air void due to internal erosion or seepage. Therefore, there is uncertainty involved with using geophysical methods where an anomaly does not necessarily …
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Aplicaciones de la hidrodinámica suavizada de las partículas al estudio de fenómenos hidráulicos
… The design of complex hydraulics works, such as spillways and bottom outlet with high velocity water flux, needs hydrodynamic studies to detect problems with waves, cavitations and so on, phenomena which could affect the structure smooth running and stability. Traditionally, this kind of studies …