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Animated 3D Model
Konečný, Kamil ; Navrátil, Jan (referee) ; Zemčík, Pavel (advisor)
This thesis deals with production of three-dimensional animated model. It’s about visualisation of balls motion on billiard table. The thesis contains summary of physical phenomena, simulation methods and animation techniques. Next there is introduced elementary description of chosen modelling software. In this work the physical model of balls motion is created, using modified equations for animation purpose. The final animation is contained on attached CD.
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Flow structure in shaft spillway area of of Labská dam
Šváb, Jiří ; Pařílková, Jana (referee) ; Zachoval, Zbyněk (advisor)
The bachelor thesis is divided into literary research and practical part (own measurement). The content of the literary research is a description of the shaft spillway, the Labská dam and the measuring equipment. The practical part is focused on measurement of the horizontal velocity, flow distribution and water surface elevation on the shaft spillway physical model. The results are horizontal velocity for two levels, water surface elevation and flow distribution.
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Animated 3D Model
Konečný, Kamil ; Najman, Pavel (referee) ; Zemčík, Pavel (advisor)
This thesis deals with production of three-dimensional animated model. Thesis is about model of billiard table and visualization of balls motion on its surface. Using simulation methods to solve the problem of balls motion is the goal of this work. This thesis contains summary of physical phenomena which describe the ball motion. There are also animation and simulation techniques which are used to create a model involved in this work. This thesis also deals with description of software, which can be used to create a three-dimensional model, animation and define user interaction. The second part of thesis describes how simulation program and visualization application was made. In the end, there are charts which describe ball behaviour involved in this work.
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Simulation of toroid coils in Ansoft Maxwell 3D
Daněk, Michal ; Pfeifer, Václav (referee) ; Hanák, Pavel (advisor)
The master thesis is focused on the simulation of the toroid coils in Ansoft Maxwell 3D software, which uses finite element method for electromagnetic field simulation. Firstly the process creation of the geometric model toroid coil with seventy-five threaded is presented. It is necessary to debug this model and prepare it for the mesh generation. Physical properties are assign to this model and it gives rise to the physical model. We will set boundaries, excitation current, core material, winding material and the parameters for the mesh generations. New material Kashke K4000 will be created in the materials library and subsequently we will define its BH curve on the basis of datasheet. Analysis is made in two modes. Direct currents (7,5A; 10A; 15A; 20A; 25A) and (non)linear materials are used in magnetostatic solution. Toroid coil is excited by current pulse in transient solution. In Ansoft Maxwell Circuit editor a source which generates current pulse will be created. This excitation will be assigned to the toroid coil as an extern source through a terminal. Core material is linear in the case of transient analysis, because Ansoft Maxwell 3D doesn´t allow to use nonlinear material in this solution. Settings are different in transient and in magnetostatic analysis. End time and time step are entered to solve this task in transient analysis. Time points are entered too. Flux density and electromagnetic field strength are calculated in these time points and later it will be possible to view the results. Calculated fields are shown as the pictures in this thesis. The procedure how to use a field calculator in the postprocessing is given as well. The achievements are summarized in the conclusion.
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Plan curved structures supported by arches
Trenz, Jan ; Zich, Miloš (referee) ; Vítek,, Jan (referee) ; Stráský, Jiří (advisor)
The aim of this doctoral thesis is the research of the plan curved footbridges with the deck supported by arch. The research is preceded by the survey of present findings about arch structures with upper deck. The summary of reasons and difficulties of design of plan curved structures follows. The appropriate approach for design of plan curved structure is searched on the basis of methods for design of straight structure. The design of arch which is subjected to minimal bending moments is emphasised. At first, the structure is designed in the same way as straight structure and the limit plan curvature (for which the method is not suitable anymore) is sought. Then the approach based on method of inversion of suspended cable is examined and adapted for designing of plan curved arch geometry. The approach is thoroughly analysed through calculation model and experimentally verified on physical model in scale 1:10. The process of design, construction and testing of the physical model is described in detail. Measured deformations and stresses are compared with expected behaviour based on numerical analysis. The comparison proves good correlation between calculation and measurement, as well as high load bearing capacity of the structure.
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Evaluation of hydrodinamic load on a brdge deck
Řezník, Jindřich ; Dráb, Aleš (referee) ; Špano, Miroslav (advisor)
The subject of this thesis is the evaluation of hydrodinamic load on a physical model of a bridge deck, especially to find the relation between the median and extreme quantiles of each hydrodanamic load part and to evaluate the influence, which has the shape of the bridge deck on the size of this load. Relations, that was found may be used to determine characteristic values of loads, caused by water flow, for example, when designing the bridge bearings.
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Tilt sensors
Hájek, Tomáš ; Caha, Luděk (referee) ; Beneš, Petr (advisor)
The topic of the Bachelor's thesis are MEMS sensors of inclination, which find their use inside integrated circuits, equipment of aerospace and automobile industry, but also in ordinary electrical appliance. The work serves the reader to build a grasp over production, usage, basic principles. Finally, it offers an overview of sensors to ease the orientation on the market. The design of the physical model, which can be used to prevent the sensor from apperance of mathematical errors, is tested in the practical part.
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Safety submersion depth of small hydro-power plant Vydra 2 inlet
Jobánek, Stanislav ; Žoužela,, Michal (referee) ; Šulc, Jan (advisor)
The thesis deals the measurement results on a physical model of the inlet part of the small hydro-power plant Vydra 2. The influence of the shape and location of the intake into the pressure pipe of small hydro-power plant Vydra 2 with respect to the water surface state was analysed. The work also deals with possibilities of using devices to eliminate the generation of vortex of higher intensities.
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Supraglacial lakes detection and volume estimation from remote sensing data
Rusnák, Samo ; Brodský, Lukáš (advisor) ; Šobr, Miroslav (referee)
Supraglacial lakes detection and volume estimation from remote sensing data Abstract Supraglacial lakes play an important role in understanding glacier dynamics, including their response to climate change. This thesis explores the problematics of estimating lake depth and volume using a physical model. This brings challenges in considering the influence of various factors, such as cryoconite on glacier surface and suspended particular matter, which influences physical model, which is in research mostly neglected. Regression analysis of the g parameter of a physical model, representing light attenuation coefficient, and supervised classification of supraglacial lakes is applied in this thesis. The results reveal the variability of parameter Ad, representing lake bottom albedo reflectance, and its impact on predicted supraglacial lakes depth and volume. The results highlight the problem of global parameterisation of the physical model of supraglacial lakes and the need for further research to improve its accuracy and explore future possibilities in this field. Keywords: supraglacial lake, remote sensing, machine learning, physical model, depth estimation, regression analysis
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