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Check valve
Nehybová, Petra ; Závorka, Dalibor (referee) ; Klas, Roman (advisor)
In this Master thesis are mentioned the most used constructions of non-return valves. Further consist of operation principles, fields of application, properties and diffi-culties connected to non-return valves. Motion plug of check valve in liquid is described based on CFD Software simulation.
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Electrical models of recuperative loads for electrical railway traction system feeder 25 kV, 50 Hz
Bureš, Jan ; Radil, Lukáš (referee) ; Klusáček, Jan (advisor)
The thesis deals with the modeling of drive vehicles from the point of power consumption and its quality that are being run in the Czech republic on the 25 kV/50 Hz current system. The locomotives being run on Czech territory are categorized according to their electric equipment and typical consumption quality, with respect to the historical evolution. The models of individual categories were created with the help of PSCAD simulation software. A system of control and power parametrization of models was also designed, based on the outer description, i. e. parameters of locomotives, line profile and the driving dynamics. Thus, the designed models are suitable for the simulation of energy flow profile in the traction system as a whole.
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Unsteady flow in pipeline
Šrenk, David ; Fialová, Simona (referee) ; Himr, Daniel (advisor)
The thesis deals with unsteady flow in the pipeline. Only one component of velocity is dominant in piping, so the problem is simplified to one-dimensional. Bachelor thesis has an analytical basis in partial differential equations of hyperbolic type. The problem and types of numerical methods are also numerically described. The numerical methods describe the boundary conditions and properties of the given methods.
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Determination of check valve dynamic properties
Dolníček, Petr ; Habán, Vladimír (referee) ; Himr, Daniel (advisor)
One of the objectives of the master´s thesis is to summarize types of most used check valves and their constructions. These check valves have specific static and dynamic properties. One of dynamic properties is vibration of closing member of lift check valve. Due to these vibrations, the added effects of fluid may result. This thesis deals with explanation and computation of these added effects.
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Optimization Of Selected Proposed ČSN Elements For Road Design
Moravec, Karel ; Čepil, Jiří (referee) ; Radimský, Michal (advisor)
Subject of the work is comparison between the selected Czech standards elements for the road design and the standards in selected EU Member States. Based on the comparison and in agreement with the supervisor is designed to optimize the control elements of pitch towards sustainable transport safety. The work addresses the longitudinal gradients of motorways, expressways and other roads directionally divided according to standard ČSN 73 6101.
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Parametric Resonance of Dynamic Systems
Gajdůšková, Vendula ; Sosna, Petr (referee) ; Hadaš, Zdeněk (advisor)
The Bachelor’s Thesis deals with the parametric resonance which is investigated from the physical point of view by means of pendulum models, for which the equation of motion has been developed and subsequent modelling has been performed. The brief introduction is followed by a theoretical chapter which deals with the physical substance of parametric resonance and in which chosen physical models are described. The practical part of the thesis begins with the following chapter devoted to chosen examples of parametric resonance in practice, showing its benefits and harmful attributes on selected examples. The fourth and the main part of the thesis contains a simulation model of parametric resonance for two pliantly bound pendulums. The concluding part of the thesis consists of the summary of findings, model results and the list of used resources, abbreviations, figures and table.
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Parametric Resonance of Dynamic Systems
Gajdůšková, Vendula ; Sosna, Petr (referee) ; Hadaš, Zdeněk (advisor)
The Bachelor’s Thesis deals with the parametric resonance which is investigated from the physical point of view by means of pendulum models, for which the equation of motion has been developed and subsequent modelling has been performed. The brief introduction is followed by a theoretical chapter which deals with the physical substance of parametric resonance and in which chosen physical models are described. The practical part of the thesis begins with the following chapter devoted to chosen examples of parametric resonance in practice, showing its benefits and harmful attributes on selected examples. The fourth and the main part of the thesis contains a simulation model of parametric resonance for two pliantly bound pendulums. The concluding part of the thesis consists of the summary of findings, model results and the list of used resources, abbreviations, figures and table.
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Electrical models of recuperative loads for electrical railway traction system feeder 25 kV, 50 Hz
Bureš, Jan ; Radil, Lukáš (referee) ; Klusáček, Jan (advisor)
The thesis deals with the modeling of drive vehicles from the point of power consumption and its quality that are being run in the Czech republic on the 25 kV/50 Hz current system. The locomotives being run on Czech territory are categorized according to their electric equipment and typical consumption quality, with respect to the historical evolution. The models of individual categories were created with the help of PSCAD simulation software. A system of control and power parametrization of models was also designed, based on the outer description, i. e. parameters of locomotives, line profile and the driving dynamics. Thus, the designed models are suitable for the simulation of energy flow profile in the traction system as a whole.
|
|
|
Check valve
Nehybová, Petra ; Závorka, Dalibor (referee) ; Klas, Roman (advisor)
In this Master thesis are mentioned the most used constructions of non-return valves. Further consist of operation principles, fields of application, properties and diffi-culties connected to non-return valves. Motion plug of check valve in liquid is described based on CFD Software simulation.
|
|
|
Unsteady flow in pipeline
Šrenk, David ; Fialová, Simona (referee) ; Himr, Daniel (advisor)
The thesis deals with unsteady flow in the pipeline. Only one component of velocity is dominant in piping, so the problem is simplified to one-dimensional. Bachelor thesis has an analytical basis in partial differential equations of hyperbolic type. The problem and types of numerical methods are also numerically described. The numerical methods describe the boundary conditions and properties of the given methods.
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