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1	Numerické modelování přepadu přes nouzové přelivy / Numerical modelling of flow over auxiliary spillways Kostelecký, Jiří January 2016 (has links) The thesis deals with possibilities of numerical modelling of an overflow over selected types of auxiliary spillways and then the possibilities are verified in particular localities. In thesis, there is carried out the determination of capacity of selected spillways by using several methods: the calculation of the overflow equation, one-dimensional and two-dimensional numerical models and physical model. The author created parametric analysis to each single method. Parametric analysis represent various hydraulic conditions. Subsequently, there is possible to express the effect of parametric analysis. The author makes a comparison of water levels received by mentioned methods set out under the specific hydraulic conditions by calibration of each model with the physical model. Finally, author recommends values of all coefficients which have an impact on results of numerical modelling of the flow over selected types of weirs mostly using like auxiliary spillways.
2	Comparison of the theory, application, and results of one- and two- dimensional flow models Lee, Kathryn Green, Melville, Joel G. January 2006 (has links) (PDF) Thesis(M.S.)--Auburn University, 2006. / Abstract. Vita. Includes bibliographic references (p.100-101).
3	Porovnání opatření navrhovaných v úseku Brantice–Kostelec na řece Opavě / Comparison of proposed measures in Brantice–Kostelec section of river Opava Korálová, Nikola January 2018 (has links) Diploma thesis deals with comparison of flow influenced by proposed measures with current status in Brantice-Kostelec section of the river Opava. The results of two-dimensional numerical model of steady uniform flow were used to assess the flow. The models were created using SMS – FESWMS for both of conditions. Thesis contains description of current status, design status, the theory of numerical modelling, comparison of the flow and evaluation of results.
4	Improving Steering Module Efficiency for Incremental Loading Finite Element Numeric Models Kitchen, Ryan L. 22 March 2006 (has links) (PDF) Engineers frequently use computerized numeric models to calculate and predict water levels and current patterns for rivers, bays, and other bodies of water. This computation often involves an iterative process known as incremental loading that can cause frustration and consume a lot of time. Although the steering module in the Surface-water Modeling System (SMS) automates incremental loading to minimize user interaction, it can still be very time consuming. This thesis examines the steering module and the incremental loading process to improve its efficiency. Specifically, the RMA2 and FESWMS models are utilized. Two methods of improving efficiency are examined. The first includes creating predicted solution files for each step of the incremental loading process. These predictions allow the steering module to take larger steps and decrease the computation time. The second method changes the algorithm used to determine the size of each step. Finally, the interface to the process was examined and simplified to require minimal input and to make the input more intuitive. automated spinning boundary condition Capitol Reef model coldstart FESWMS finite element FLO2DH FST2DH hotstart file hydraulic modeling hydraulic trend incremental loading initial condition linear prediction numeric model predicted solution quadratic prediction revisions RMA2 simple flume model SMS spindown process spinning steering steering module wave effect prediction Civil and Environmental Engineering
5	Analysis of the Sediment Transport Capabilities of FESWMS FST2DH Ipson, Mark K. 19 August 2006 (has links) (PDF) Many numeric models simulate the transport of sediment within rivers and streams. Engineers use such models to monitor the overall condition of a river or stream and to analyze the impact that the aggradation and degradation of sediment has on the stability of bridge piers and other features within a stretch of a river or stream. A model developed by the Federal Highway Administration, FST2DH, was recently modified to include the simulation of sediment movement within a channel. The tools for modeling sediment movement with FST2DH remain unproven. This thesis examines the sediment capabilities of FST2DH. It evaluates the sediment results for reasonableness and compares the results to those obtained from a sediment transport model developed by the Army Corps of Engineers, SED2D WES. Resulting concentrations from another program created by the Army Corps of Engineers, SAMwin, provide additional data comparison for FST2DH sediment solutions. Several test cases for laboratory flumes give additional insight into the model's functionality. Finally, this thesis suggests further enhancements for the sediment capabilities of the FST2DH model and provides direction for future research of the sediment transport capabilities of FST2DH. Results show that FST2DH appropriately models sediment movement in channels with clear-water and equilibrium transport rate inflow conditions. Transport formulas found to be functional include the Engelund—Hansen, Yang sand and gravel, and Meyer-Peter—Mueller equations. FST2DH has difficulty modeling channels with user-specified inflow concentrations or transport rates, models with very small particles, models containing hydraulic jumps, and models with small elements. The test cases that successfully run to completion provide appropriate patterns of scour and deposition. Other trends in the results further verify the functionality of many of the sediment transport options in FST2DH. bed change bedload transport bed material load computer model delta FESWMS finite element FLO2DH FST2DH hydraulic modeling inflow concentration numeric model SAM SAMwin SED2D SED2D WES sediment sediment concentration sediment modeling sediment movement sedimentation simple flume SMS transport transport equations transport rate Civil and Environmental Engineering

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