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Low specific speed pump working in turbine mode
Bezdíček, Jiří ; Moravec, Prokop (referee) ; Štefan, David (advisor)
The use of the pump in turbine mode is an evolving area. For this reason, research of less standard pumps from the edges of the specific speed spectrum is suitable for this purpose. This diploma thesis was focused on the influence of splitter blades on the exclusively turbine mode of a low specific speed pump. CFD calculations of the pump were performed, considering the sidewall gaps between the stator and the rotor. CFD served not only to obtain turbine characteristics but also to describe the flow and analysis of other phenomena, such as volumetric efficiency or hydraulic forces.
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Mobile Water Treatment Plants
Trlica, Karel ; Moravec, Prokop (referee) ; Kárník, Jan (advisor)
This bachelor thesis deals with technologies of drinking water treatment. The focus is on comparison between mobile water treatment systems and ground water treatments. The first part of thesis is concerned with technology and construction of container water treatment system, while pointing out the benefits associated with its usage. The next part of thesis deals with ground water treatment system, analyzes its technologies and advantages. The thesis also assesses the performance differences between classic and container water treatment systems, while taking into account usage of mobile water treatment systems for specific conditions. The last part deals with specific water treatment systems, that is the container water treatment system CCW KU-1 and the water treatment system in Valašské Meziříčí. The thesis strives to explain both water treatment systems in detail. Overall evaluation and set of specific differences between the water treatment systems is included in the conclusion of the thesis.
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Utilization of wind energy for delivery of liquids
Červinková, Kateřina ; Moravec, Prokop (referee) ; Štigler, Jaroslav (advisor)
The aim of this bachelor is developing a deep search about uzilization of wind energy for delivery of luquids, which is transforming to mechanical or potential energy of the liquid. We can find history of wind pumps in this work. We can also read about pump overview, which are using for drive of wind energy, constructions and parameters. Finally they are advantages and disadvantages of transforming wind energy to mechanical energy or potential energy of the liquid against transforming to electrical energy.
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Adjoint solver
Heinz, Pavel ; Kůrečka, Jan (referee) ; Moravec, Prokop (advisor)
This bachelor thesis deals with an analysis of selected settings of Adjoint solver in commercial software ANSYS Fluent 18.2. The first part of the thesis deals with the basics of hydrodynamics, especially the equations describing the behaviour of liquids. It also deals with the theoretical foundations of CFD simulation and shape optimization. Examples of simple shape optimization cases are presented in this thesis. The last part focuses on the analysis of selected settings of Adjoint solver. These settings are afterwards tested on specific hydraulic part for a purpose of a pressure loss reduction.
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Cavitation erosion testing
Sochorec, Rostislav ; Moravec, Prokop (referee) ; Rudolf, Pavel (advisor)
The thesis is a literature survey of three most common methods of accelerated tests of cavitation erosion. These are cavitation induced by changing flow velocity in relatively conventional high-speed water tunnels, vibratory method which uses ultrasound to produce cavitation, and jets of liquid impacting surface of materials. In order to understand them, there is also a brief general introduction to the issue of cavitation and most important factors which can have effect on cavitation tests results.
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