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Study of in-take vortices
Burda, Radim ; Štigler, Jaroslav (referee) ; Hudec, Martin (advisor)
This bachelor thesis deals with vortex flow, in particular intake-vortices formations with emphasis on intake-vortices with full air core which appear near vertical intakes. The thesis is divided into two parts. The first part contains theoretical research on the intake-vortices and maps development of this field during the last 60 years. The goal of the experimental part is to verify recommended dependence of the formation of intake-vortices with full air core on submerge of intake and volumetric flow rate. The experiment was conducted in the laboratory of the fluid engineering department of Viktor Kaplan.
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Effect of the inlets interoperability to their energy efficiency and the surface vortices formation
Chvátal, Petr ; Sehnal, Jan (referee) ; Šulc, Jan (advisor)
This diploma thesis contains several individual parts. It's especially about summary in the area of one-way inlets: the energy efficiency of the inlets and influence of the neighbouring inlets on them, the phases of creation of surface vortices, the influence on the vortex structures by the mutual operation of the neighbouring inlets and also the methods used to determine the critical and safe depth of dive of inlet against the creation of surface vortices. It also includes the description of process and the evaluation of laboratory tests, which are focused on the assessment of the effect of the mutual operation of inlets on their energy efficiency and the creation of higher intensity surface vortices. Important part of this diploma thesis is also a comparison of the achieved results with the results of the authors who have dealt with this issue.
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Effect of the inlets interoperability to their energy efficiency and the surface vortices formation
Chvátal, Petr ; Sehnal, Jan (referee) ; Šulc, Jan (advisor)
This diploma thesis contains several individual parts. It's especially about summary in the area of one-way inlets: the energy efficiency of the inlets and influence of the neighbouring inlets on them, the phases of creation of surface vortices, the influence on the vortex structures by the mutual operation of the neighbouring inlets and also the methods used to determine the critical and safe depth of dive of inlet against the creation of surface vortices. It also includes the description of process and the evaluation of laboratory tests, which are focused on the assessment of the effect of the mutual operation of inlets on their energy efficiency and the creation of higher intensity surface vortices. Important part of this diploma thesis is also a comparison of the achieved results with the results of the authors who have dealt with this issue.
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Study of in-take vortices
Burda, Radim ; Štigler, Jaroslav (referee) ; Hudec, Martin (advisor)
This bachelor thesis deals with vortex flow, in particular intake-vortices formations with emphasis on intake-vortices with full air core which appear near vertical intakes. The thesis is divided into two parts. The first part contains theoretical research on the intake-vortices and maps development of this field during the last 60 years. The goal of the experimental part is to verify recommended dependence of the formation of intake-vortices with full air core on submerge of intake and volumetric flow rate. The experiment was conducted in the laboratory of the fluid engineering department of Viktor Kaplan.
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OPTIMIZATION OF THE HYDRAULIC SYSTEMS PROJECT IN TERM OF TIME CHANGE OF PARAMETERS
Hudec, Martin ; Haluza, Miloslav (advisor)
The objective of this project was to contribute to deepen the piece of knowledge about swi¬rling movement of the water in the hydraulic power plants’ water intakes, especially in case of the Swirl Turbine. The vortexes mostly occur near outflow holes in the bottom or walls of water tanks. Collectively they are called inflow vortices. According to the form they take they can be divided into four main categories. By the model research on hydraulic power plants’ inflow it is generally concerned on determination enough infallible conditions, under which the pulling-in of the air by a vortex into an inflow does not happen. For this purpose has been in the Fluid engineering laboratory projected and realized an experimental device enabling observation of creation, spread and extinction of the inflow vortices.
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