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Fluid couplings and torque convertors
Pospíšil, Dan ; Žák, Radim (referee) ; Klas, Roman (advisor)
Bachelor thesis contains basic information about torque converters and fluid couplings. The main part deals with hydrodynamic couplings and modification in their design to improve attributes during operation. Also listed are the basic equations. Listed below are the possibilities of construction torque converters and their parallel connection with mechanical transmission. The final section is devoted to the hydrostatic piston clutch.
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Positive displacement pump design
Klapka, Petr ; Šperka, Oldřich (referee) ; Klas, Roman (advisor)
This thesis gives an overview of the structure of hydrostatic pumps. First, there is shown the integration of the hydrostatic pumps between other hydraulic machines and then there are described the fundamental relationships and characteristics. The main objective of this work is to make a basic list of species distribution and the classical hydrostatic pumps. For each type, while mentioning his principle, his description of the main members is also highlighted some of their advantages and disadvantages.
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Slip factor of the hydrodynamic pumps
Chromek, Lukáš ; Himr, Daniel (referee) ; Klas, Roman (advisor)
This bachelor thesis deals with the initial draft of an impeller wheel, determination of its specific energy that has a pump with infinite number of impeller blades and following correction to real specific energy of an impeller wheel pump with finite number of blades. The correction will be performed using different methods by various authors and some of the methods will also be compared during the calculation of specific energy and discharge head of pump of several real impeller wheels. Then the thesis goes on to deal with some of the effects arising from the flow of fluid in the impeller wheel that often have negative influence on above-mentioned specific energy. At the end of the thesis, there will be brief abstract on problems of the correction, simulation, and analysis of flow in a blade channel using CFD software.
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Pump design
Šmíd, Pavel ; Šperka, Oldřich (referee) ; Klas, Roman (advisor)
The aim of this labour is to analyze the structural design of pumps used in the present time. First, we focus on the distribution of pumps by type of energy conversion, and there are hydrostatic and hydrodynamic. Will further comparison of these types, and enter the region of their optimal application under specific speed. This labour will focus only on the hydrostatic pumps when we will do an analysis of design performance of the individual pumps and we'll give the advantages and disadvantages of the specific pumps. We shouldn´t forget the basic technical parameters and individual areas of practical use these given types. At the end of the labour will be processed the basic equations and the ideal characteristics of pumps.
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Pump design
Hlaváček, David ; Koutný, Luděk (referee) ; Klas, Roman (advisor)
The bachelor thesis contains basic information about hydrostatic pumps. In the first chapter, there is a basic dividing of hydraulic machines, it is followed by a brief charakteristic of the hydrostatic and hydrodynamic machines with their advantages and disadvantages. The main part is devoted to the hydrostatic pumps. At the beginning, there is dividing pumps, it is suplemented by principle operation of the individual types with transport parameteres, relations for calculating the geometric volume and with their advantages and disadvantages. At the end there are some basic formulas for calculating the hydrostatic pumps with their theoretical and real characteristics.
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Fluid couplings and torque convertors
Dančák, Zdeněk ; Sloupenský, Zdeněk (referee) ; Klas, Roman (advisor)
This work presents basic points and informations as to fluid couplings, torque convertors and the means of connection in hydromechanical transmissions. Work describes various structural design, it’s perfection, disavantages, and cooperation with engine. There are described the possible means of torque characteristics optimalization according to the needs of operation as well as the means to achieve better efficiency.
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Adaptation of the water mill
Kilian, Ondřej ; Hudec, Martin (referee) ; Klas, Roman (advisor)
Bachelor thesis deals with questions of usage of hydroenergetics potential on the Czech Republic territory in first parts. This topic continues by history of using of water energy in the original mills. The third part deals with small water power plant solving that is appropriate for usage of original old water mill site. The general section applies to small water power plant Perknov where the original mill site is used for realization of SWPP.
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Pump design
Čejka, Pavel ; Himr, Daniel (referee) ; Klas, Roman (advisor)
In this bachelor’s thesis are including basic information about dividing hydrostatic pump. In the first chapter of thesis will be introduced the basic dividing pumps namely on pump hydrostatic and hydrodynamic. Accordance with this dividing will be next introduced basic construction design of hydrostatic pump. With each one type of pump will be introduced their advantages and disadvantages, then also their description of function and their using in practice and all this will be eked with simple scheme or with picture of pumps. Next will be described individual characteristic parts of their construction. In the conclusion will be introduced basic numerical relations for characteristic value of pump and their interdependence will be described with diagrams.
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Pump design
Mizera, Ladislav ; Svozil, Jan (referee) ; Klas, Roman (advisor)
This thesis considers the characteristic of hydrodynamic pumps. It describes the activity of these pumps and it shows the particular characteristic curves. Then the hydrodynamic pumps are divided and described. The biggest attention is attended to the vertical multistage centrifugal pump and shaft seal.
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Using SolidWorks for model preparation in CFD
Švaňhal, Radek ; Klas, Roman (referee) ; Rudolf, Pavel (advisor)
This bachelor’s thesis objective is to analyze utilization of program SolidWorks for preparing CFD (Computational Fluid Dynamics) models. First part describes the process of modelling a finite volume of a Francis turbine rotor. Also, the most useful functions and modelling procedures are presented. Second part analyzes pros and cons of using SolidWorks for CFD model preparation. In the last part the model is imported to pre-processor Gambit where meshing tools and procedures are introduced. In conclusion the thesis summarizes the main benefits of using a stand-alone specialized CAD software for CFD modelling.
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