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Design of geometric elements to improve the aerodynamics of the front wing of the formula student car
Šulík, Daniel ; Trusík, Vojtěch (referee) ; Štefan, David (advisor)
This master's thesis focuses on the design of a new front wing for Formula Student. The first chapter dissects basic aerodynamic concepts and principles utilized in wing aerodynamics design. The second chapter showcases front wing concepts from various Formula Student teams. The third chapter introduces the official regulations for Formula Student 2024, primarily focusing on vehicle aerodynamic devices. The fourth chapter presents iterative designs of front wings modelled in Creo 7.0. The fifth chapter explains the process of preparing the model for simulation and demonstrating how vehicle geometry is adjusted in the SpaceClaim environment. Furthermore, it elaborates on generating the computational mesh and setting boundary conditions for car simulations on straights and in cornering. The initialization process of the task and the computation itself are also explained. The sixth chapter evaluates the results from simulations. Aerodynamic values such as downforce and drag are analysed on the front wing. Changes in the vehicle's COP position and the velocity and pressure fields around the front wing are also monitored. Flow characteristics around the underfloor, whose aerodynamic efficiency depends on the front wing design, are analysed too. The seventh chapter explains the production process and composition of the front wing.
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Sport and labour law
Pavlík, David ; Pichrt, Jan (advisor) ; Tomšej, Jakub (referee)
1 Title of the thesis: Sport and labour law Abstract The subject of this thesis is to analyse the legal regulation in the Czech Republic in the field of sport and to evaluate its status. In the Czech Republic, the legal status of professional athletes still differs from the practice applied in most other European Union countries. In the Czech Republic, professional athletes in team sports are still in the position of self-employed persons, although these athletes are guaranteed the status of employees across Europe. The first chapter deals with the definition of basic concepts related to the sports sector. These concepts include in particular the definition of the term sport itself and its possible subdivisions. The second chapter introduces the entities that occur within the sports sector. These are mainly sports organisations that operate in a so-called pyramid structure. It also includes sports clubs, coaches and agents. The third chapter deals with the National Sports Agency, the reasons for its creation, its legislation and its institutions. The author describes the development of the Agency over the last almost 5 years and critically evaluates its activities. The fourth chapter deals with the function of the European Union in relation to the regulation of the sports sector. Furthermore, the author...
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Illegal employment and its sanction
Liškařová, Zuzana ; Tomšej, Jakub (advisor) ; Štefko, Martin (referee)
Illegal employment and its sanction Abstract The topic of this rigorous thesis is illegal employment and its sanction. The thesis focuses on the analysis of situations when illegal employment and the actual performance of illegal work is enabled and furthermore it takes a comprehensive view on the sanctions against illegal employment and illegal work. The aim of the thesis is to provide a comprehensive analysis of different types of illegal work, such as illegal employment of foreigners, non-contractual work and false self-employment. The thesis also aims to identify the causes and consequences of this issue and to analyze the possibilities to counteract this negative phenomenon. Attention is also paid to the sanctions that are associated with illegal employment and illegal work. The thesis is structured into nine substantive chapters and can be divided thematically into four main parts. The first part deals with dependent work, examining its characteristics, features and the conditions under which it is performed. The second part deals with illegal work itself, explaining the concept of illegal work and its development within the legal system of the Czech Republic. This part also deals with the types of illegal work, including illegal employment of foreigners, non-contractual work and false...
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Identification and investigation of key biotic and abiotic factors in sewage sludge bio-drying process
Pilnáček, Vojtěch
The work is focused on the pretreatment of sewage sludge after anaerobic stabilization by the process of biodrying. Biodrying is a process in which the organic substrate undergoes aerobic decomposition and at the same time, due to the increased temperature and the blowing air, it is dried. The aim of the work was to optimize the most important process variables, to verify whether the process is suitable for pretreatment of sewage sludge before use as fuel or fertilizer in the context of Czech legislation and to investigate which groups of organisms and how they participate in the degradation of endocrine disruptors. For these purposes, quarter- and semi- operational bio-drying reactors were designed. The results of the work show that the most important process parameters are the aeration rate and temperature as its dependent variable and the substrate composition. The setup with a fixed time interval of blower switching was found to be the optimal aeration regime. The optimal substrate composition was a 5:2 ratio of sludge:birch chips. The results of the work further show that the bio-drying process is suitable for the preparation of fuel for co-incineration with other material. It is not very suitable for mono-incineration due to exceeding emission limits. The calorific value of the resulting fuel...
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Employment Incomes Tax Optimization
Sýkorová, Kristýna ; Malinka, Jakub (referee) ; Brychta, Karel (advisor)
The bachelor thesis is focused on the taxation of personal income from dependant activities and tax optimization of this income. The thesis discusses the issues of labour law, tax law and social and public health insurance. The procedure for determining the tax and the resulting tax liability is described, together with the calculation of net wages. This procedure is subsequently applied in the calculation of tax liabilities of fictitious income tax payers.
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Charge Efficiency of a Gasoline Turbocharged Engine
Holas, Tomáš ; Böhm, Michael (referee) ; Svída, David (advisor)
This bachelor thesis deals with the topic of volumetric efficiency of a gasoline turbocharged engine. The first part of this thesis is devoted to research on this topic. In the second part of the thesis an analysis of data from a 1.5 TSI engine from the Volkswagen group line-up obtained during the WLTP test was performed. This analysis was achieved by the means of creating regression models on the measured data and comparing their results. The result of this analysis was the determination of the main ordinarily measured parameters on which the volumetric efficiency depends.
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Response of tree rings and NDVI of Central-European conifers to extreme climatic events
Mašek, Jiří ; Treml, Václav (advisor) ; Šilhán, Karel (referee) ; Piermattei, Alma (referee)
Terrestrial ecosystems, mainly forests are important sinks of atmospheric carbon with high year-to-year variability driven by moisture availability. Trees store carbon in various compartments of the biomass, namely in stems, roots, and leaves. In this doctoral thesis, I investigated climate-growth responses of stem biomass (represented by tree rings) and leaf biomass (represented by normalized difference vegetation index; NDVI) of Pinus sylvestris and Picea abies in temperate forests of Czechia. I was interested in (i) general climate-growth responses and specifically, in reactions to drought and (ii) topographical factors influencing these responses at various spatial scales. We demonstrated that climate-growth responses of both species' tree rings in the lowlands revealed a significant positive and negative influence of moisture and temperature, respectively, while in higher elevations the responses were opposite. At a landscape level, the topography of relief modulated responses of Pinus sylvestris tree rings, while at the large-scale level, the geographical position and elevation (temperature gradients) were the main factors for both species. Responses of NDVI were slightly weaker compared to tree rings and did not show the influence of topography at any scale probably because vegetation...
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Uncertainty Evaluation in Photometry and Radiometry
Motyčka, Martin ; Bálský,, Marek (referee) ; Gašparovský,, Dionýz (referee) ; Škoda, Jan (advisor)
This dissertation thesis is focused on the uncertainty analysis of the spectroradiometric and photometric measurements. The measurement uncertainty should be stated in every measurement protocols or calibration certificates. Recently the luminance cameras are widely used for the luminance measurements in the whole scene with a good resolution and measuring time. However, there is no uncertainty estimation method for these measuring devices. Therefore, this thesis analyses the luminance measurement uncertainty of the luminance analyser LDA – LumiDISP, that can be classed as a luminance camera. Since the calibration procedure is very complicated and traceable to other measuring photometric devices, there is a detailed description of the measurement uncertainties of luxmeters, luminance meters, spectroradiometric systems and its practical calculations for these systems in the light laboratory FEKT Brno University of Technology. However, the measurement uncertainties estimation of the spectroradiometric systems is especially difficult for the output quantities calculated from the spectral power distribution of the light source. In this thesis there is presented a method of uncertainty measurement and estimation of these spectroradiometric systems and luminance analyser LDA, where the luminance measurement uncertainty varies with the measured spectral power distribution of the light source, its position in the luminance image and the exposure settings.
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Identification and investigation of key biotic and abiotic factors in sewage sludge bio-drying process
Pilnáček, Vojtěch ; Innemanová, Petra (advisor) ; Najmanová, Petra (referee) ; Wrzecionko, Jakub (referee)
The work is focused on the pretreatment of sewage sludge after anaerobic stabilization by the process of biodrying. Biodrying is a process in which the organic substrate undergoes aerobic decomposition and at the same time, due to the increased temperature and the blowing air, it is dried. The aim of the work was to optimize the most important process variables, to verify whether the process is suitable for pretreatment of sewage sludge before use as fuel or fertilizer in the context of Czech legislation and to investigate which groups of organisms and how they participate in the degradation of endocrine disruptors. For these purposes, quarter- and semi- operational bio-drying reactors were designed. The results of the work show that the most important process parameters are the aeration rate and temperature as its dependent variable and the substrate composition. The setup with a fixed time interval of blower switching was found to be the optimal aeration regime. The optimal substrate composition was a 5:2 ratio of sludge:birch chips. The results of the work further show that the bio-drying process is suitable for the preparation of fuel for co-incineration with other material. It is not very suitable for mono-incineration due to exceeding emission limits. The calorific value of the resulting fuel...
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