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Flow of Newtonian liquid through a flexible tube
Slonek, Matouš ; Illík, Jakub (referee) ; Klas, Roman (advisor)
This bachelor's thesis focuses on the flow of newtonian liquid through a flexible tube. The theoretical part consists of a review of various fields that flexible tube occurs in. In the next chapter were defined equations describing the flow of a liquid through a deformable tube and lastly, constitutive material models were stated. In the practical part, a one-dimensional FSI simulation of the flow of a liquid through a flexible tube was realized.
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Study of Surface Vortex Behaviour
Illík, Jakub ; Rudolf, Pavel (referee) ; Štigler, Jaroslav (advisor)
This bachelor thesis studies surface vortex and its time evolution. The theoretical part introduces an elementary set of equations used to describe vortex motion. The experimental part focuses mainly on defining the shape of surface vortex in enclosed space. A special program to process recorded images was developed in order to detect a part of the vortex. The entire surface profile is subsequently determined by fitting with curve of Cauchy probability distribution.
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Analogies in fluid dynamics: vortex as a black hole
Staňo, Šimon ; Štigler, Jaroslav (referee) ; Illík, Jakub (advisor)
This bachelor thesis discusses the various analogous connections of fluid dynamics with the fields of electricity, electromagnetism, quantum mechanics and gravity. Par- ticular attention has been focused on a certain similarity between rotating black holes and the draining bathtub vortex. At first sight different phenomena that can be ex- plored by simulating known phenomena. The behaviour around real black holes can, with some simplification, be studied within the hydraulic laboratory. The pioneer of this idea is W. G. Unruh, whose work was followed up and continued with research by Silke Weinfurtner. Her research served as the inspiration for the exploration of this field in this bachelor thesis. It is possible to visualize the event horizon of a black hole or the boundaries of the ergosphere, it is also possible to observe more complex phenomena such as superradiance, backreaction or ringdown. The analogy is not completely precise, but it allows a very complex system to be studied with a simple experiment and can lead to a better understanding of these phenomena. A simple experimental setup was created in the laboratory of Victor Kaplan’s Department of Fluid Engineering.
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Fluid flow analysis in the open cylindrical container with the free surface vortex
Illík, Jakub ; Klas, Roman (referee) ; Štigler, Jaroslav (advisor)
This master's thesis analyses fluid flow in an open cylindrical tank with vortex using numerical simulation. The theoretical part introduces a set of equations governing fluid flow and relations used to describe vortex motion. A general overview of terms used in computational fluid dynamics is presented. The experimental section consists of three parts. The vortex modelling is performed using ANSYS Fluent software. Data are consequently analysed within ANSYS CFD-Post software tool. Special focus is put on the vortex shape that is fitted with a curve corresponding to a probability density function of the Cauchy distribution. Results are then plotted in MATLAB software.
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Analogies in fluid dynamics: vortex as a black hole
Staňo, Šimon ; Štigler, Jaroslav (referee) ; Illík, Jakub (advisor)
This bachelor thesis discusses the various analogous connections of fluid dynamics with the fields of electricity, electromagnetism, quantum mechanics and gravity. Par- ticular attention has been focused on a certain similarity between rotating black holes and the draining bathtub vortex. At first sight different phenomena that can be ex- plored by simulating known phenomena. The behaviour around real black holes can, with some simplification, be studied within the hydraulic laboratory. The pioneer of this idea is W. G. Unruh, whose work was followed up and continued with research by Silke Weinfurtner. Her research served as the inspiration for the exploration of this field in this bachelor thesis. It is possible to visualize the event horizon of a black hole or the boundaries of the ergosphere, it is also possible to observe more complex phenomena such as superradiance, backreaction or ringdown. The analogy is not completely precise, but it allows a very complex system to be studied with a simple experiment and can lead to a better understanding of these phenomena. A simple experimental setup was created in the laboratory of Victor Kaplan’s Department of Fluid Engineering.
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|
Flow of Newtonian liquid through a flexible tube
Slonek, Matouš ; Illík, Jakub (referee) ; Klas, Roman (advisor)
This bachelor's thesis focuses on the flow of newtonian liquid through a flexible tube. The theoretical part consists of a review of various fields that flexible tube occurs in. In the next chapter were defined equations describing the flow of a liquid through a deformable tube and lastly, constitutive material models were stated. In the practical part, a one-dimensional FSI simulation of the flow of a liquid through a flexible tube was realized.
|
|
|
Fluid flow analysis in the open cylindrical container with the free surface vortex
Illík, Jakub ; Klas, Roman (referee) ; Štigler, Jaroslav (advisor)
This master's thesis analyses fluid flow in an open cylindrical tank with vortex using numerical simulation. The theoretical part introduces a set of equations governing fluid flow and relations used to describe vortex motion. A general overview of terms used in computational fluid dynamics is presented. The experimental section consists of three parts. The vortex modelling is performed using ANSYS Fluent software. Data are consequently analysed within ANSYS CFD-Post software tool. Special focus is put on the vortex shape that is fitted with a curve corresponding to a probability density function of the Cauchy distribution. Results are then plotted in MATLAB software.
|
|
|
Study of Surface Vortex Behaviour
Illík, Jakub ; Rudolf, Pavel (referee) ; Štigler, Jaroslav (advisor)
This bachelor thesis studies surface vortex and its time evolution. The theoretical part introduces an elementary set of equations used to describe vortex motion. The experimental part focuses mainly on defining the shape of surface vortex in enclosed space. A special program to process recorded images was developed in order to detect a part of the vortex. The entire surface profile is subsequently determined by fitting with curve of Cauchy probability distribution.
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