National Repository of Grey Literature 16 records found  1 - 10  jump to record: Search took 0.00 seconds.
 Emptying of the rotating vessel Hideghéty, Attila ; Koutný, Luděk (referee) ; Haluza, Miloslav (advisor) This bachelor´s thesis handles with happenings related to hydromechanics. For all stands Euler´s equations of hydrostatics, hydrodynamics and Bernoulli´s equation. The water has got a characteristic surface in the rotating vessel, by increasing the revolutions the water begins to pour out. The task is analyzing the events that can occur when the vessel is rotating with the water. Detailed record 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. Detailed record Seting of Working Point of co-Operated Centrifugal Pumps Sůkal, Jaroslav ; Koutný, Luděk (referee) ; Štigler, Jaroslav (advisor) The aim of my diploma thesis is to create a computer program that will help planners to design pipe systems. The program enables to find the parameters of a pumping unit (such as flow, head, power, efficiency, dissipation etc.) in a parallel pipe system which even has two tanks with dissimilar height. Moreover, the program is able to “calculate” the parameters of pumps that have maximum efficiency so that the planner could easily compare the data and determine whether the pump is working near the optimal point. The introduction includes a short overview of issues connected with pumping equipment. The next part deals with a description of software solutions of individual problems. The thesis concludes with a manual of the designed computer program. Detailed record Suspension flow modeling Hideghéty, Attila ; Koutný, Luděk (referee) ; Rudolf, Pavel (advisor) Diplomová práce se zabývá prouděním v hydrocyklónu. Hydrocyklón je separační stroj, kterým slouží k oddělování pevných částice z kapaliny (nejčastěji z vody). Díky tangenciálnímu vstupu do zařízení nastává silné vířivé proudění, které způsobuje přisávání vzduchu přes horní a dolní výtok. Toto vzduchové jádro hraje důležitou roli v separaci částic. Výpočty jsou provedeny pomoci CFD. Detailed record The influence of the hub on discharge and efficiency of the swirl turbine Husák, Martin ; Koutný, Luděk (referee) ; Haluza, Miloslav (advisor) The aim is to determine by numerical modeling the influence of the hub on discharge and efficiency of the swirl turbine. The first part summarizes the theoretical knowledge about water turbines. In the main part is done hydraulic design of turbine, create model in Inventor, export geometry in Gambit and build mesh. Then it is described the solution methodology in Fluent, evaluation of computed data and their presentation in the form of tables and graphs Detailed record The centrifugal pump radial force reduction Koutný, Luděk ; Haluza, Miloslav (referee) ; Pochylý, František (advisor) This diploma thesis deals with problematics of the radial force effect on the runner and possibilities of the force reduction. Some pump modifications were proposed and changes of radial force magnitude in reverse blocking state and optimal flow state were examined in consequence. Following investigation was focused on the new modifications regarding to the pump efficiency and its characteristics stability. All results were carried out using the Solidworks, the Fluent and the Microsoft Excel software. Detailed record Hydraulic cylinder Sedláček, Jiří ; Koutný, Luděk (referee) ; Klas, Roman (advisor) This bachelor thesis deals with the hydraulic motors and their distribution. It also deals linear hydraulic motors, their distribution, parts of which are composed, and their use. An important part of the hydraulic motors are strength analysis, which are also listed in this thesis. The bachelor thesis includes a mathematical model for natural frequuencies solution of linear hydraulic motors. Detailed record Study of the vortex impeller pump design Červinka, Martin ; Koutný, Luděk (referee) ; Klas, Roman (advisor) Diploma thesis deals with problems of design a sludge pump with a vortex impeller. Clearly summarizes the basic information on hydrodynamic pumps with a significant focus on sludge pumps. It contains a design of a vortex impeller, which is supported by CFD (Computational Fluid Dynamic) calculation in software Fluent. The aim of the work is to design vortex impeller, which could replace the existing channel impeller while maintaining the operating parameters of the pump. Detailed record Suspension flow modeling Hideghéty, Attila ; Koutný, Luděk (referee) ; Rudolf, Pavel (advisor) Diplomová práce se zabývá prouděním v hydrocyklónu. Hydrocyklón je separační stroj, kterým slouží k oddělování pevných částice z kapaliny (nejčastěji z vody). Díky tangenciálnímu vstupu do zařízení nastává silné vířivé proudění, které způsobuje přisávání vzduchu přes horní a dolní výtok. Toto vzduchové jádro hraje důležitou roli v separaci částic. Výpočty jsou provedeny pomoci CFD. Detailed record The influence of the hub on discharge and efficiency of the swirl turbine Husák, Martin ; Koutný, Luděk (referee) ; Haluza, Miloslav (advisor) The aim is to determine by numerical modeling the influence of the hub on discharge and efficiency of the swirl turbine. The first part summarizes the theoretical knowledge about water turbines. In the main part is done hydraulic design of turbine, create model in Inventor, export geometry in Gambit and build mesh. Then it is described the solution methodology in Fluent, evaluation of computed data and their presentation in the form of tables and graphs Detailed record

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3 Koutný, Lukáš
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