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Showing 1 to 20 of 30 for “"Dam-break"”.
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Characterizing the dam break release
The failure of a dam can cause disastrous consequences, thus understanding the nature of a dam break is of utmost importance. A model of a dam break was built and used to profile the resulting wave. The gate release was characterized to check for consistency, maximum velocity, and it's profile. …
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Dam break risk assessment in Baker Valley (Chilean Patagonia)
… (EIA) presented by HidroAysen lacked of a dam failure impact assessment, crucial to prevent or minimize the impact of unexpected flooding caused by a dam failure. A dam break risk assessment was performed for the so called Baker 2, a proposed concrete gravitational dam located on the Rio …
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Experimental and Numerical Modeling of Dam-Break and Levee-Breach Flows
… of experimental and numerical studies on dam-break and levee-breach flows. Experiments were conducted to gather comprehensive data on a steady levee-breach flow in an urban area and on unsteady 2-D and 3-D dam-break flows. Numerical studies of dam-break flows were carried out using …
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3-D Numerical Simulation Of Dam-Break Flows Over Movable Beds
Irvin Cooper was a prominent music educator in boys’ adolescent voice change research. Dr. Cooper developed the Cambiata concept as a method for teaching boys to sing throughout the voice change. This method was starkly different from the traditional model that encouraged the changing voice to be …
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A study on green water problem with dam break model and the BIV technique
… phase. The continuous phase is explored with the dam break model by three main approaches, namely analytical, experimental and numerical. Analytically, both the Eulerian and Lagrangian Stoker solutions are introduced to study the dam break wave in a dry horizontal channel. The two Stoker solutions …
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An experimental investigation of pressure of a simple dam break generated wave impacting a plate
… waves may be caused by storms, tsunamis, or dam breaks and can cause serious damage. This thesis presents two experiments aimed at measuring the pressure exerted by a wave. In both experiments, a series of water waves are released from a reservoir. One wave is released at a time and the waves …
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AN EMPIRICAL STUDY OF FLOOD WAVE IMPACT PRESSURES TO DETERMINE THE EFFECTIVENESS OF NEW SEAWALL DESIGNS USING A DAM-BREAK APPROACH
… Tank (LCWT) with water release gate mechanism (dam-break method) was primarily designed and constructed for this purpose. Apart from the smooth surface wall model, geo-grid materials of varying textures and grit sizes have been used to model different degrees of surface roughness with each model …
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Horizontal pressure gradient and bed shear stress under double dam-break driven swash and validation of a Reynolds-Averaged Navier-Stokes equations based model
… phase and interaction intensity. ☐ A double dam-break mechanism was used to produce near prototype swash events and allowed for analysis of swash interactions. The time offset between the bore propagation varied (0 s to 3 s) to investigate swash interactions. The impermeable immobile bed …
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A “Human Endeavor”: Killing In Contemporary U.S. Combat Narratives
… aims to develop a 3-D numerical model of dam-break flows on movable beds. Three tasks are defined to accomplish the goal of this study. The first task is developing a 3-D hydrodynamic model to simulate dam-break flow on fixed beds with simple geometry and test the water surface tracking …
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Risk Assessment of Post-Fire Floods on Dams and Their Floodplains
… infrastructures and residential zones. Earth dams are vulnerable to post-wildfire floods. The increased post-wildfire runoff volumes due to changes in soil characteristics and reduced vegetation could result in overtopping failure of an earth dam (dam-break scenario), and the accumulation of …
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Implementation of the phase field method with the Immersed Boundary Method for application to wave energy converters
… shear flow, Rayleigh Taylor instability, and the Dam Break Problem is carried out. This development is then coupled with the present Immersed Boundary Module which is used to simulate the presence of moving bodies and again verified against test cases, such as the Dam Break problem with a vertical …
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Estimativa de onda de cheia proveniente de ruptura hipotética de barragem e sua propagação
… of a critical situation as a consequence of a dam break. There is a structure failure with a breach formation and a downstream outflow routing. This evaluation determines discharges, water levels and travel times in each fixed cross section of the river. The downstream routing is carried out by …
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Extreme wave impact on a flexible plate
… characterize the flow-structure interaction of a breaking wave impacting a flexible vertically mounted plate. Several experiments were conducted on a simulated dam break in which water was rapidly released from a reservoir to generate a wave, which impinged on a cantilevered stainless steel plate …
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Solution of fully-coupled shallow water equations and contaminant transport using a primitive variable Riemann solver and a semi-discrete SUPG method
… test cases. These cases include wet and dry dam break problems, evolution of a dam break wave with an obstacle downstream of the dam, oscillation of a bead of water in a parabolically-shaped basin, supercritical flow in a constricted channel, as well as advection and diffusion of contaminant …
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Numerical Solution of the One-dimensional and Cylindrical Serre Equations for Rapidly Varying Free Surface Flows
… for example, from; rapid reservoir releases, dam-breaks, mud slides, tidal bores, storm surges, tsunamis and flows over variable topography, are characterized by abrupt changes in the water surface. These changes produce vertical acceleration of the fluid particles. These vertical …
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Numerical Solution of the One-dimensional and Cylindrical Serre Equations for Rapidly Varying Free Surface Flows
… for example, from; rapid reservoir releases, dam-breaks, mud slides, tidal bores, storm surges, tsunamis and flows over variable topography, are characterized by abrupt changes in the water surface. These changes produce vertical acceleration of the fluid particles. These vertical …
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Bore Generation, Propagation, and Impact on Coastal Structures
Generation and propagation of bores due to dam-break, initial mound of water, and solitarywave breaking and the impact on coastal structures are studied in this research by employing three different theoretical approaches. The theoretical models are based on three sets of equations, namely the …
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The De Saint-Venant equations in curved channels
… curvilinear model is a reasonable description of dam-break flow. Subsequent calculations, based on field data, of the celerity of the dynamic wave illustrate how big the corrections can be.
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SPH Simulation of Fluid-Structure Interaction Problems with Application to Hovercraft
… with an elastic body and the second one is dam-break flow through an elastic gate. The results obtained with the SPH-FEM model show good agreement with published results and suggest that the SPH-FEM model is a viable and effective numerical tool for FSI problems. This research is then …
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Improvements of MPM and Its Applications in Modelling Rapid Soil/Water Movements
… flows through embankments, overtopping induced dam failures and the erosion of riverbanks and coastal areas. Since numerical simulations are significantly less costly tools than physical experiments even on a small scale, the past decades have witnessed the dramatic development of computer-aided …
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