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Mutual interaction of pressure pulsations and pipe vibration
Hrazdíra, Zdeněk ; Fialová, Simona (referee) ; Habán, Vladimír (advisor)
The aim of this thesis is to find out the effects of pipe vibrations on pressure pulsations in liquids. The pipe-liquid system is mathematically described by proper boundary conditions and wave equations, which are derived from basic physical laws. Firstly, simplified model of only liquid is considered, which is then compared to the results obtained from analysis of pipe-liquid mutual interaction.
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Mutual interaction of pressure pulsations and pulsations of undirect pipe
Hrazdíra, Zdeněk ; Pochylý, František (referee) ; Habán, Vladimír (advisor)
This thesis deals with mathematical modeling of multiphysics FSI (fluid-structure interaction) problem, describing mutual interaction of pressure pulsations and vibrations of indirect pipe in a 2D region. Firstly, physical partial differential equations are derived separately for both media, which are in turn coupled and solved analytically. Results of mentioned models include natural frequency values, amplitude-frequency characteristics and both natural and driven damped oscillations of pipe and liquid.
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High precision sub-pixel image registration methods and their applications in astrophysics
Hrazdíra, Zdeněk ; Švanda,, Michal (referee) ; Svoboda,, David (referee) ; Druckmüller, Miloslav (advisor)
Mnoho vědeckých pozorování a měření, které pracují s obrazovými daty, obsahují krok, ve kterém je nutno dané obrazy registrovat (navzájem sesadit). Výsledky těchto metod tak často silně závisí na přesnosti registrace obrazů. Tato práce popisuje novou, robustní a vysoce přesnou metodu sub-pixelové registrace obrazů (založenou na registraci standardní fázovou korelací) a její aplikace v různých oborech.
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Mutual interaction of pressure pulsations and pulsations of undirect pipe
Hrazdíra, Zdeněk ; Pochylý, František (referee) ; Habán, Vladimír (advisor)
This thesis deals with mathematical modeling of multiphysics FSI (fluid-structure interaction) problem, describing mutual interaction of pressure pulsations and vibrations of indirect pipe in a 2D region. Firstly, physical partial differential equations are derived separately for both media, which are in turn coupled and solved analytically. Results of mentioned models include natural frequency values, amplitude-frequency characteristics and both natural and driven damped oscillations of pipe and liquid.
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Mutual interaction of pressure pulsations and pipe vibration
Hrazdíra, Zdeněk ; Fialová, Simona (referee) ; Habán, Vladimír (advisor)
The aim of this thesis is to find out the effects of pipe vibrations on pressure pulsations in liquids. The pipe-liquid system is mathematically described by proper boundary conditions and wave equations, which are derived from basic physical laws. Firstly, simplified model of only liquid is considered, which is then compared to the results obtained from analysis of pipe-liquid mutual interaction.
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