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The hydraulic modelling research of specific shutter intended for determination of water flow in circular profiles with free surface
Heřmanová, Lenka ; Šafář, Robert (referee) ; Žoužela, Michal (advisor)
The main outcome of this Thesis is a set of Q / h characteristic that was obtained extensive hydraulic model research measuring plate designed for the determination of water flow in circular profiles. The final Q / h characteristic are functions of angle and vertical cut remoteness of the top slot from the bottom of the measurement aperture. Part of the output is an overview of the expected values of uncertainties of measurement in practical use in a specific aperture in sewers and evaluation of impacts involved in determining the overall uncertainty of the flow. The performed hydraulic modeling research is therefore possible to determine Q / h and characteristics for circular sections of larger diameter and to determine their uncertainties when using specific plate. For the design and shape measuring plate of the profile with larger average output is part of a supplement for quick design of specific screens.
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Assessment effects substandard tributaries flowing a proportion on Q/h characteristics thin-plate weir with a rectangular cutout
Šmidrkalová, Nina ; Šafář, Robert (referee) ; Žoužela, Michal (advisor)
This master´s thesis deals with the problem of measuring flow, especially using the method of Q/H characteristics. It describes the thin-plate weir and mentions specific channels. The master´s thesis suggests options of monitoring flow capacity in fixed proffiles with free surface. The master´s thesis also includes an experiment, which is focused on simulation of substandard tributary flowing proportions before weirs for determining their effect on Q/H characteristcs. The experiment is carried out on a thin-plate weir with a rectangular notch at the Department of Water Structures at the Faculty of Civil Engeneering in Brno. Another part of the master´s thesis is data processing to get an idea about the impact of the phenomenon in real applications. Finally, options are recommended for follow-up research.
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The determination of minimal countercurrent distance of the water surface sensor from the thin-plate V-notch weir.
Kopečná, Monika ; Zubík, Pavel (referee) ; Žoužela, Michal (advisor)
This thesis clarifies the issue of the measuring flows with the help of capacity measurement systems using Q/h characteristics and also describes measuring techniques for determining the water surface level. The various types of measuring weirs and their Q/h characteristics are described in detail. It also mentions the position of the installation of the sensor. The main task is to find a practical minimal countercurrent distance of the water surface sensors used in practice for use with a V-notch weir in the form of experimental measurements in the water management research laboratory at the Department of Water Structures Faculty of Civil Engineering in Brno. The weirs used for this experiment had top angle cutouts of 90°, 53°8´ and 28°4´. The obtained data is evaluated and subsequently the minimal countercurrent distance of the water surface sensor is determined. The thesis also includes recommendations for further research.
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Construction design of instructional models at the hydraulic laboratory circuit
Havlát, Michal ; Kříž,, Lubomír (referee) ; Žoužela, Michal (advisor)
The Higher vocational school and The Secondary School of civil engineering in Vysoké Mýto is going to build a hydraulic laboratory circuit which will be used especially for teaching students of hydraulics and hydrology. Laboratory will include several scaled down models which simulate especially hydraulic tasks with open-channel flow or flow in pipes. It specifically means simulation of spillway, flow-measuring flumes, culvert flow and mechanic energy loss simulation per length of pipe and at singularity flow. This thesis is focused on hydraulics of the simulated tasks, project documentation and hydraulic calculations preparing for all designed models. The documentation also includes laboratory equipment - instrument carrier and service stairs. This thesis includes theoretical text part, technical report, hydraulic calculations and drawing part.
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