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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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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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