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Testing of a transparent model of a pressure-swirl nozzle
Sapík, Marcel ; Pech, Ondřej (referee) ; Jedelský, Jan (advisor)
The aim of the thesis is to put a transparent scaled PMMA model of the pressure swirl nozzle into operation, which includes, the selection of working fluids and the preparation of a test set to allow measurements using optical methods (LDA, PDA, PIV, high-speed visualization). The theoretical part describes the basic theory of atomization, optical measurement methods and deals with the problems of optical transition in optically complex systems. It also includes an extensive search for transparent liquids and materials of enlarged models that have been used in experiments, which often aim to match light refractive indices between these materials. In the practical part, attention is paid to the preparation of the test set and tests of chemical effects of several selected liquids on PMMA material are conducted, including a summary of experience with their use, as there was a permanent damage to the material. Several LDA measurements followed, using kerosene, p-cymene, 1-bromonaphthalene and water, evaluated the effect of the refractive index difference on the results. It turned out that no observable influence occurred if the refractive index difference between the nozzle material and the liquid was small. In addition, a visualization of internal flow through a high-speed camera was made. The practical part closes the static pressure measurement in the nozzle chamber, where the pressure ratio was measured on the walls of the chamber as well as on its axis. The measurement confirmed that the pressure on the chamber walls is constant and varies with the distance from the chamber axis.
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Acrylic glass base production to gramophone deck
Bezděk, Filip ; Zouhar, Jan (referee) ; Kalivoda, Milan (advisor)
This thesis is aimed at a very detailed process of a transparent plexiglass used for manufacturing an upstand of a gramophone. The diploma work is mainly focused on various types of the plexiglass, its attributes and the gramophone’s upstand production. Several manufacturing technologies of a plexiglass such as division of a board-type semi product, precise milling, grinding, polishing and thermal treatment are provided in this diploma work through a very detailed description of a production process of a gramophone’s deck. The outcome of this thesis is a description of individual technologies and the economic evaluation within the real business environment of AZ Plastik company.
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Multi-funkcional building
Blahová, Dagmar ; Bolkovec, Martin (referee) ; Sátora, Josef (advisor) ; Mohelníková, Jitka (advisor)
The Bachelor´s thesis on theme Multi-funkcional building deals with the construction of a building with associated functions in Brno-Zábrdovice, Milady Horákové on a plot located in the gap with the original purpose of undeveloped courtyard. It is a multi-storey building with a basement and seven floors. The property has an underground garage which is soluted by systems stackers. As the supporting structure is selected reinforced concrete skeleton system with reinforced concrete reinforcing core. The base structure consists of white bath supplemented with foundation passports and bored piles. The roof is designed as a single-ply flat roof. Part of this thesis was to anchore solutions hanging facade with movable panels of plexiglass. Living space and rentable commercial spaces occupy most of the building.
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Testing of a transparent model of a pressure-swirl nozzle
Sapík, Marcel ; Pech, Ondřej (referee) ; Jedelský, Jan (advisor)
The aim of the thesis is to put a transparent scaled PMMA model of the pressure swirl nozzle into operation, which includes, the selection of working fluids and the preparation of a test set to allow measurements using optical methods (LDA, PDA, PIV, high-speed visualization). The theoretical part describes the basic theory of atomization, optical measurement methods and deals with the problems of optical transition in optically complex systems. It also includes an extensive search for transparent liquids and materials of enlarged models that have been used in experiments, which often aim to match light refractive indices between these materials. In the practical part, attention is paid to the preparation of the test set and tests of chemical effects of several selected liquids on PMMA material are conducted, including a summary of experience with their use, as there was a permanent damage to the material. Several LDA measurements followed, using kerosene, p-cymene, 1-bromonaphthalene and water, evaluated the effect of the refractive index difference on the results. It turned out that no observable influence occurred if the refractive index difference between the nozzle material and the liquid was small. In addition, a visualization of internal flow through a high-speed camera was made. The practical part closes the static pressure measurement in the nozzle chamber, where the pressure ratio was measured on the walls of the chamber as well as on its axis. The measurement confirmed that the pressure on the chamber walls is constant and varies with the distance from the chamber axis.
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Acrylic glass base production to gramophone deck
Bezděk, Filip ; Zouhar, Jan (referee) ; Kalivoda, Milan (advisor)
This thesis is aimed at a very detailed process of a transparent plexiglass used for manufacturing an upstand of a gramophone. The diploma work is mainly focused on various types of the plexiglass, its attributes and the gramophone’s upstand production. Several manufacturing technologies of a plexiglass such as division of a board-type semi product, precise milling, grinding, polishing and thermal treatment are provided in this diploma work through a very detailed description of a production process of a gramophone’s deck. The outcome of this thesis is a description of individual technologies and the economic evaluation within the real business environment of AZ Plastik company.
|
|
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Multi-funkcional building
Blahová, Dagmar ; Bolkovec, Martin (referee) ; Sátora, Josef (advisor) ; Mohelníková, Jitka (advisor)
The Bachelor´s thesis on theme Multi-funkcional building deals with the construction of a building with associated functions in Brno-Zábrdovice, Milady Horákové on a plot located in the gap with the original purpose of undeveloped courtyard. It is a multi-storey building with a basement and seven floors. The property has an underground garage which is soluted by systems stackers. As the supporting structure is selected reinforced concrete skeleton system with reinforced concrete reinforcing core. The base structure consists of white bath supplemented with foundation passports and bored piles. The roof is designed as a single-ply flat roof. Part of this thesis was to anchore solutions hanging facade with movable panels of plexiglass. Living space and rentable commercial spaces occupy most of the building.
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