National Repository of Grey Literature 8 records found  Search took 0.00 seconds. 
Numerical modelling of flow over auxiliary spillways
Kostelecký, Jiří ; Golík,, Pavel (referee) ; Zachoval, Zbyněk (advisor)
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.
Influence of the weir width on a discharge coefficient of the broad crested weir
Kašpar, Tomáš ; Veselý, Jaroslav (referee) ; Zachoval, Zbyněk (advisor)
This bachelor’s thesis focuses on the influence of the weir width on a discharge coefficient of the broad-crested weir. The relation between discharge coefficients and the relative width of the weir was defined, on the basis of measuring the level of the water surface in front of the weir, given various discharges and various width of the weir. These data were compared to the measurement results found in the professional literature.
Analysis of influence of the relative weir height of rectangular broad-crested weir on discharge coefficient
Knéblová, Michaela ; Janků, Ondřej (referee) ; Zachoval, Zbyněk (advisor)
This diploma thesis dealt with the influence of relative weir height of rectangular broad-crested weir on discharge coefficient. Based on the level measurement in front of weir for different heights of the weir P and discharges were determined values of discharge coefficient according h/P. These values were compared with the results of measurements and relationships, which are mentioned in the professional literature. In conclusion were derived new relationships that can be used to calculate the discharge coefficient relative to the overflow head.
Influence of upstream face inclination of broad-crested weir on discharge coefficient
Major, Jakub ; Veselý, Jaroslav (referee) ; Zachoval, Zbyněk (advisor)
This bachelor’s thesis deals with influence of upstream face inclination of broad-crested weir on discharge coefficient. From measurement of water level in front of weir at different discharges and different upstream face inclinations, were determined values of discharge coefficient depending on relatively length of weir. These measured values were compared with results measurements, which are said in professional literature.
Numerical modelling of flow over auxiliary spillways
Kostelecký, Jiří ; Golík,, Pavel (referee) ; Zachoval, Zbyněk (advisor)
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.
Analysis of influence of the relative weir height of rectangular broad-crested weir on discharge coefficient
Knéblová, Michaela ; Janků, Ondřej (referee) ; Zachoval, Zbyněk (advisor)
This diploma thesis dealt with the influence of relative weir height of rectangular broad-crested weir on discharge coefficient. Based on the level measurement in front of weir for different heights of the weir P and discharges were determined values of discharge coefficient according h/P. These values were compared with the results of measurements and relationships, which are mentioned in the professional literature. In conclusion were derived new relationships that can be used to calculate the discharge coefficient relative to the overflow head.
Influence of the weir width on a discharge coefficient of the broad crested weir
Kašpar, Tomáš ; Veselý, Jaroslav (referee) ; Zachoval, Zbyněk (advisor)
This bachelor’s thesis focuses on the influence of the weir width on a discharge coefficient of the broad-crested weir. The relation between discharge coefficients and the relative width of the weir was defined, on the basis of measuring the level of the water surface in front of the weir, given various discharges and various width of the weir. These data were compared to the measurement results found in the professional literature.
Influence of upstream face inclination of broad-crested weir on discharge coefficient
Major, Jakub ; Veselý, Jaroslav (referee) ; Zachoval, Zbyněk (advisor)
This bachelor’s thesis deals with influence of upstream face inclination of broad-crested weir on discharge coefficient. From measurement of water level in front of weir at different discharges and different upstream face inclinations, were determined values of discharge coefficient depending on relatively length of weir. These measured values were compared with results measurements, which are said in professional literature.

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