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Flow measurement of air by multiport averaging probes
Šimák, Jakub ; Uher, Miroslav (referee) ; Šedivá, Soňa (advisor)
Master work deals with the measurement of fluid flow (particularly air) pipe, with orifice and multiport averaging probe. The theoretical part is followed by practical, which verifies the properties of the measured system. In a next part of semestral work are verifies the properties of multiport averaging probes Vavra s.r.o. MQS-011 and Rosemount Annubar 485. Measured values from probes are compared.
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Modification of 3D milling machine to 3D printer
Halamíček, Lukáš ; Vetiška, Jan (referee) ; Bradáč, František (advisor)
This thesis deals with rebuilding of engraving machine to 3D printer. In the first part it describes possible 3D printing technologies and its utilizations in rebuilding. In the next section suitable parts for reconstruction are chosen and described. Then the controlling of heating bed, hot end and filament feed is realized by using software TwinCAT by company Beckhoff. Functional 3D printer should be result of this thesis.
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Manufacturing of Components Using the Waterjet Method
Petřek, Lukáš ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
The present bachelor thesis deals with the technology of high pressure hydroabrasive jet. The work is divided into several parts, where the first part analyzes the working principle of technology and compares the measured arithmetic mean deviation of the profile Ra on the cutting edges of the sample after incision by high pressure hydroabrasive jet with the arithmetic mean deviation of the profile Ra given by technology manufacturer, Furthermore it presents a division of abrasives including their recycling and an impact of wastewater on the environment. The second part focuses on the description of individual components of the above technology. The following third part is devoted to the company Rychlý TOM engaged in the production and cutting of material using this technology. In addition, the fourth part discusses the production of individual components. New trends in the area of technology of high pressure hydroabrasive jet are presented in the last part. Finally the thesis provides a discussion and conclusion.
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Calculation of heatexchanger
Kvapil, Matěj ; Naď, Martin (referee) ; Klučka, Ivan (advisor)
This bachelor thesis focuses on strength calculation of a heat exchanger according to ČSN EN 13445. First stage is an introduction into the theme of heat exchangers and their calculation. Next part is about the calculation according to ČSN EN 13445 itself. Part of this thesis is also strength analysis of selected items using numerical method (FEM). Annexes include calculation in software Microsoft Excel and basic drawings of items.
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Construction and production of wiping element of open source FDM printer
Chrást, Jan ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The aim of thisworkis to design and manufacture a cleaning element foropen source FDM printer. The workincludestheoreticalanalysis of theissue of cleaningnozzle of FDM printer and the design solution in the form of cleaner element. Model of body of cleaning element isdesigned in program Autodesk Inventor and made on the open source printerowned by Ing. Zemčík. Subsequently, the solutionistested and cleaningproperties are comparated.
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Proposal nozzle for measuring the air quantity of an internal combustion engine
Esterka, Ondřej ; Charvát, Pavel (referee) ; Štětina, Josef (advisor)
In this bachelor‘s thesis are mentioned emission standards, which apply to passenger cars, and the mixture-control system. There is also a research of volumetric and sectional flowmeters, suitable for measuring the flow volume of the air, including the principle of measuring the volumetric or mass flow. After that follows engineering design of Venturi tube for measuring the flow of the air through the chosen combustion engine. The design is based on the appropriate standard. There is also involved a welded assembly drawing of the Venturi tube, and a description, how to use the tube in a test room.
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Air gymnasium with facilities
Silbernágl, Petr ; Bernard, Jiří (referee) ; Rubinová, Olga (advisor)
The bachelor thesis deals with air conditioning gyms. The aim was to design a two to three air conditioning equipment for the sports hall. The first part introduces the various types of buildings that have spaces greater than 4 meters and air-solving, basic information on the distribution of terminal elements of type nozzles and diffusers. The theoretical part is followed by the calculation of a project.
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Ventilation in sports facility
Frühauf, Patrik ; Šikula, Ondřej (referee) ; Rubinová, Olga (advisor)
The bachelor thesis deals with ventilation in sports facility. The objective of this work is to design two or three air-conditioning units in the part of assigned building. The bachelor thesis is divided into three main parts: theoretical part, calculation part and project.The theme for theoretical part is air distribution. Attention is especially devoted to airflow in a room, piping system and distribution elements. The calculation part is practically focused on designing of air-condition units. The last part of bachelor thesis is formed as documentation for sports facility.
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The description of the fluid flow solution in a nozzle
Říha, Zdeněk
The description of the fluid flow solution in a nozzle with help of ANSYS-Fluent software is listed in this article. Self-oscillations of the main hydraulic parameters are consequence of the fluid flow in the nozzle. Input pressure of the water reaches level 10 MPa. This value evokes high speed fluid flow in the nozzle. Fluid is created with the mixture of water air and vapor. For such conditions, we need to take into account the effect of compressibility in the calculation. The aim of the calculations was to find a principal of the flow in the nozzle for given conditions, if we know, that in fact a pulsating fluid jet was at the output form the nozzle
Fulltext: content.csg -  PDF
Plný tet: UGN_0426588 - PDF
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Large-amplitude pulsatile nozzle flow
Tesař, Václav ; Kordík, Jozef
Flowfield inside a simply-shaped nozzle with periodic unsteadiness of so large amplitude that a flow reversal occurs during a part of the cycle was investigated. The range of frequencies was from 20 Hz to 320 Hz, and ratios of the pulsation amplitude to the steady flow were from 1.0 to 4.0. Anemometric velocity measurements were combined with numerical flowfield computations.
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