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Showing 1 to 20 of 34 for “"Hydraulic models"”.

  1. Reproducing and Quantifying Spatial Flow Patterns of Ecological Importance with Two-Dimensional Hydraulic Models

    Crowder, David WillisVirginia Tech2002

    … is poorly understood. One-dimensional (1-D) hydraulic models and two-dimensional (2-D) models that do not explicitly incorporate meso-scale topographic features are not capable of adequately reproducing the flow patterns found in channels having complex topography. Moreover, point …

    vt Repository record

  2. Mapping flood extent using hydraulic models and JERS-1 SAR data on the Tar River floodplain

    Zheng, Tao.East Carolina University2023

    ecu Repository record

  3. Sensitivity study of the assembly averaged thermal-hydraulic models of the MEKIN computer code in power transients

    Rodack, ThomasMassachusetts Institute of Technology1977

    Thesis (Nucl. E.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1977.

    mit Repository record

  4. Using ensemble precipitation forecasts to improve hydrologic risk assessment at river crossings

    Matus, Sean AlanUniversity of Illinois at Urbana-Champaign2019

    … cascades uncertainty through hydrologic and hydraulic models. Each precipitation ensemble member corresponds to an independent model run, resulting in ensembles of streamflow at a 24-hour lead time. The forecast is expanded to predict river hydraulics, through flow velocity and depth, at …

    uiuc Repository record

  5. Evaluating Ecological Influences of Altered Flow Regimes Using Two- and Three-Dimensional Hydrodynamic Models

    Shen, YiVirginia Tech2009

    … of two- (2-D) and three-dimensional (3-D) hydraulic models to reproduce the localized complex flow features at steady base and peak flows is examined first. The performance of the two hydraulic models is evaluated by comparing the numerical results with measurements of flow around a …

    vt Repository record

  6. Flow resistance corrections for physical models using unit flowrates

    Cote, Cassidy B., author, Thornton, Christopher, advisor, Ettema, Robert, committee member, Rathburn, Sara, committee memberColorado State University. Libraries2024

    … of evaluating flow behavior in open-channel hydraulic models. Flow resistance in open channels is commonly characterized by Manning's resistance equation, where a value of Manning's roughness coefficient n, indicates the magnitude of flow resistance. Physical hydraulic models are one method …

    colostate Repository record

  7. Probabilistic Flood Risk Assessment Under Climate Change Scenarios in the Humber River Watershed

    Rincon, Daniela2020

    … are generated using hydrological (HEC-HMS) and hydraulic models (HEC-RAS). Finally, flood risk is calculated by integrating the floodplain maps with the vulnerability of exposed elements. Results reveal an increase in the flood risk for most of the climate scenarios by the end of the 21st …

    york Repository record

  8. Development of HEC-HMS and HEC-RAS models for urban floodplain mapping and flood damage reduction in Brownsville, Texas

    Quinonez, Carlo G.Rice University2005

    … of this project was to develop hydrologic and hydraulic models for the floodplain analysis for Brownsville, Texas and analyze mitigation alternatives within a Geographic Information Systems (GIS) and digital data framework. This framework allowed for flexible manipulation of data and easy …

    rice Repository record

  9. Eddy generation at a convex corner by a coastal current in a rotating system

    Klinger, Barry A.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution1992

    … vertical shear which increased with gyre size. Hydraulic models were also applied to flow around gently curving topography to determine the critical separation curvature as a function of upstream parameters.

    woods-hole Repository record

  10. Effects of Nodalization on Containment Analysis in a Loss of Coolant Accident Using GOTHIC

    McNeil, Wilfred J. IVVirginia Tech2013

    Existing containment models for a loss of coolant accident at many nuclear power plants were created in the 1970s using older computer technology and thermal hydraulic models which were available at that time. While conservative, these models may not present the detail necessary to identify …

    vt Repository record

  11. Modeling Flows for Assessing Tidal Energy Generation Potential

    Spurlock, Derek ScottVirginia Tech2008

    … body can be accomplished by using numerical hydraulic models to predict the flow velocity at a location of interest. The East River in Manhattan has been used here in an effort to develop a modeling methodology for assessing the power potential of a site. Two two-dimensional CFD models, …

    vt Repository record

  12. Modelling local scour around bridge piers using TELEMAC

    Kabir, AlamgirDepartment of Civil Engineering2005

    … for local conditions. Alternatively, smaIlscale hydraulic models, which are laborious and time intensive, are widely used. In view of the above, increasing attention is being paid to the use of Computational Fluid Dynamics (CFD) based modelling for the prediction of local scour and its opposite, …

    cape-town Repository record

  13. Development and Evaluation of the Profile Synthesis Method for Approximate Floodplain Redelineation

    Dickerson, Thomas AshbyVirginia Tech2007

    … the nation typically consist of developing new hydraulic models, or reusing existing hydraulic model results in conjunction with new, more detailed LiDAR terrain models. This research develops a profile synthesis method for redelineation of approximate flood boundaries, and evaluates the …

    vt Repository record

  14. Decreasing stream habitat for Greenback cutthroat trout under future climate projections in headwater streams of the southern Rocky Mountains, Colorado

    Ma, Chenchen, author, Morrison, Ryan R., advisor, Nelson, Peter, committee member, Kanno, Yoichiro, committee memberColorado State University. Libraries2022

    … Rocky Mountains to construct one-dimensional hydraulic models (HEC-RAS) to evaluate streamflow and physical habitat under four future climate projections. A principal component analysis (PCA) was then performed to demonstrate the importance of each morphological feature of these streams. …

    colostate Repository record

  15. Improvements to a key contributor of frequency control : the co-ordination of guide vane operation in a pumped storage plant

    Kippie, Mu'azzamDepartment of Mechanical Engineering2014

    … storage station were modelled in a thermal-hydraulic simulation environment. With the model it was possible to realise the reverse power phenomenon inherent in pumped storage plants. The model was validated with similar studies in the literature and pumped storage plant data. A selection of …

    cape-town Repository record

  16. Sensitivity and uncertainty analysis in hydrological modeling: a case study of South Chickamauga Creek watershed using BASINS/HSPF

    Dey, Preyanka2022

    … quality control and application of hydrological models in water resources management. While sensitivity analysis identifies major input parameters affecting model response, uncertainty analysis evaluates the uncertainty in model predictions. In this analysis, a Hydrological Simulation …

    utc Repository record

  17. Modeling riparian groundwater depth as a function of river flow for the Rio Grande at Albuquerque, NM

    Isaacson, Kelly

    … reach in Albuquerque, NM, USA. A one dimensional hydraulic model, calibrated with USGS streamflow data, was used to interpolate streamflow measurements throughout the study reach and provide the river water surface elevation for the entire river. The limitations of streamflow measurements in sand …

    unm Repository record

  18. An Evaluation of a Hydrological Model Used to Predict the Impact of Flow Attenuation on Downstream Flood Flows

    Porter, Robert Andrew I-HsienDurham University2011

    … interventions. The results were compared with a hydraulic model, HEC-RAS, which is a standard tool for flood hazard prediction in the UK. HEC-RAS is not without its own uncertainties however, so the aim of the model comparison was to benchmark Overflow against an established model, rather than …

    durham Repository record

  19. Development of appropriate steam turbine models in Flownex

    Neerputh, Rahendra LaljithDepartment of Mechanical Engineering2014

    … of Cape Town has a goal of building thermo-hydraulic models of an entire power plant. A one-dimensional thermo-hydraulic network solver, Flownex, is the software envisaged to accomplish this goal. The development of appropriate steam turbine models in Flownex supports fulfilment of this …

    cape-town Repository record

  20. Analysis, Modeling, and Forecasting Of Urban Flooding

    Brendel, ConradVirginia Tech2020

    … ensemble forecasting, and hydrologic and hydraulic modeling. The outcomes of this dissertation provide municipalities with tools and knowledge to assist them throughout the process of developing solutions to their site-specific urban flooding issues. Specifically, tools are provided to …

    vt Repository record

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