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Formula Student Car Aerodynamic Analysis
Koňařík, Josef ; Svída, David (referee) ; Vančura, Jan (advisor)
The aim of thesis is to devise the body due to the current model in the 3D software ProEngineer and given by current Formula Student competition rules. Subsequently, the model will be created for the purposes of CFD software for numerical analysis of aerodynamics. Based on this analysis, the simulation will be obtained with the coefficient of air and axles load.
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Relevance of the hydrostatic and hydrodynamic paradox
Vacula, Jiří ; Haluza, Miloslav (referee) ; Fialová, Simona (advisor)
This bachelor’s thesis is concerned with the explanation of the hydrostatic and hydrodynamic paradox existence. Above all hydrostatic paradox is not in general properly explained which causes additional puzzle. Therefore the aim of this thesis is to find real reasons of these effects and in addition to check up possible consequences of liquid compressibility.
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Modelling of air flow in combustion chamber ZKG
Krišpín, Jan ; Lisý, Martin (referee) ; Špiláček, Michal (advisor)
The subject of the submitted bachelor thesis is a description of chemical and physical behavior of biomass, methods of energetic transformation of biomass, processes in a combustion chamber during burning and primarily flowing of combustion air. A part of this thesis is a modelling of an air flow in the combustion chamber using the finite elements method with an evaluation and a suggestion of construction changes of the combustion chamber.
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DETERMINATION OF FLOW AND LOAD CHARACTERISTICS OF SURFACE FLAP GATES THROUGH PHYSICAL AND NUMERICAL MODELING
Picka, Daniel ; Možiešik,, Ľudovít (referee) ; Pochylý,, František (referee) ; Šulc, Jan (advisor)
The subject of research were effect of elevated water level in the downstream apron on the weir flow capacity and load characteristics of the flap gate. The thesis is focused on possibilities of physical and CFD modeling of flap gate weir flow. In the introduction are contained current condition of knowledge, perfomed model studies conducted in the Czech republic and abroad, as well as flap weirs realized in our country and in the world. This is followed by experimental physical research on family of weir structure models in scales 1:1 (prototype), 1:2 and 1:2.5. Options CFD simulations a flap gate weir are contained in chapter of CFD modeling. In conclusion are compared physical methods with CFD simulations on flap gate weir.
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Aerodynamic Wind Tunnels in the Automotive
Hromada, Martin ; Zháňal, Lubor (referee) ; Vančura, Jan (advisor)
The aim of bachelor thesis is research themed the aerodynamics wind tunnels in the automotive. Thesis contains overview of historical evolution of wind tunnels and their categorization. Following chapter describes main parts of wind tunnel, ways of measurement in wind tunnels and problems during testing.
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Model the flow of coolant in electrical machine
Potyš, Jiří ; Hájek, Vítězslav (referee) ; Janda, Marcel (advisor)
The thesis is focused on possibilities of asynchronous motors cooling with use of simulation at ANSYS Workbench program. It is divided into two parts. The first part deals with analyses of cooling medium circulation through ventilator and cooling medium circulation on the motor surface. As a result of the analyses is air speed distribution and air pressure representation. The second part of the thesis includes simulation of motor temperature rise both with cooling and without cooling at Ansys Workbench application together with temperature measurement of real asynchronous motor in the laboratory. For cooling purposes air circulation was used. The goal of my research is comparison of the computing results with the measured results.
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Mathematical models of retention object of urban drainage
Pavlík, Ondřej ; Stanko,, Ing Štefan (referee) ; Pollert,, Jaroslav (referee) ; Prax, Petr (advisor)
This work deals with the use of 3D mathematical models of fluid in water management practice. Using 3D mathematical model was assessed retention tank Jeneweinova, which is situated on a sewer network of the city of Brno and is an important object of urban drainage. Retention basin designed to keep overflow from CSO chambers to Svratka and Svitavský náhon during storm events. Retention tank Jeneweinova is suitable for the assessment, because tank was designed bassed the Master Plan drainage of Brno using 1D mathematical model. Another factor was the physical model, which was build in LVV Vin FAST BUT. And finally, near the retention tank will be installed measurement on the sewerage network, which will be able to verify the results whitch has been predicted in this work. Mathematical model of retention tanks Jeneweinova was build in software FLOW-3D. FLOW-3D is a general purpose CFD (Computational Fluid Dynamics) software for flow of fluid in steady and unsteady mode and uses computational techniques to solve the equations of motion of fluids. This software is mainly used for the calculation of hydraulic fluids, gas flow and heat transfer simulations. Results from 3D mathematical model has been compared with the values in the physical and 1D mathematical model.
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Proposal of Engine Intake System with Exhaust Gases Recirculation
Vojkůvka, František ; Štěpánek, Karel (referee) ; Dundálek, Radim (advisor)
The object of the diploma thesis is to optimize vacuum function of the ejector using computional fluid dynamics, or CFD. The ejector is inserted to the intake system of the six - cylinder diesel engine to increase the pressure gradient of the exhaust gas recirculation system. The analysis of the current design solution is performed and then the ejector with the new shape affording higher vacuum effect is proposed. The introductory part is devoted to the questions of diesel engines emissions and technology to reduce emissions in the exhaust system focused on the EGR.
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History and Present of Formula 1 Aerodynamic Components
Olšák, Jiří ; Drápal, Lubomír (referee) ; Vančura, Jan (advisor)
This bachelor thesis deals with research themed the history and present of Formula 1 aerodynamic components. It focuses on those components, that significantly have affected the aerodynamic properties and behaviour of F1 cars, as in the past, so in the present. It also discusses the categorization of the various elements of the current F1 cars, followed by evaluation of insight into the overall aerodynamic loads.
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