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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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Local Ventilation
Bilík, Martin ; Otáhal, Jan (referee) ; Krejčí, Vladimír (advisor)
This bachelor thesis deals with local ventilation, especially a variant of the local exhausting. At the start of work shall indicate the reasons why it is ventilation very important. There are listed some requirements for ventilation of technical and legislative terms. Ventilation systems are analyzed by several criteria in the next part. The next chapter of this work is devoted to systems and methods of local ventilation. In one chapter is made and a description of the distribution parts of the ventilation system. The last chapter deals with designing and using exhaust adapters. There is also made comparison of their parameters, which represent the operating costs associated with using these adapters.
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Study efficiency of modern thermal insulation for buildings
Šot, Petr ; auditor, Karel Trojan, Brno, energetický (referee) ; Šťastník, Stanislav (advisor)
The bachelor´s thesis deals with the problem of thermoreflect insulation. The small part of thesis focuses on the energy demand of buildings and its problems. Then the greater extent is analysed problems by heat transfer of material. It includes effects arising from the individual methods of heat transfer and defines the level of expression of individual methods of heat transfer in materials. The thesis presents an overview of experimental methods for determining thermal insulating properties of insulators. Then there is shown a selection of the most widespread insulation materials used in today´s construction. It includes the division of insulators in terms of used materials and subsequent classification of the most used materials in these groups. Another part of thesis deals with the thermoreflect isolation. There are mentioned the necessary concepts for the study of thermoreflect thermal insulation, which include the emissivity surface, the coefficient of mutual radiation and translucency of the material. Then there is described the method heat transfer of thermoreflect isolation. On the next there are presented experimental methods of determining thermal insulating properties thermoreflect thermal-insulating material. The thesis also includes a practical part, which contains the measurement results on a small range of samples taken termoreflection insulators. In the end there is mentioned a brief realization of thermoreflection thermal insulation materials in buildings.
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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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Development of mobile flowmeter
DITRICH, Vít
This thesis contains the description of well-known methods and principles dealing with the measurement of the flow-velocity of fluids. Furthermore, it contains the description of the development of the mobile flow-meter, including the realization and the technical description of the device. The thesis describes the advantages and disadvantages of the above mentioned flow-meter. The last part of the thesis is dedicated to the calibration of the device and to the possible practical use of the flow-meter.
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Climatic parameters during the winter housed sheep
ŠKOPEK, Zdeněk
The topic of the bachelor work is concentraded on the assessment of influence of microclimatic parameters during the winter housed sheep. Measure the basic microclimatic parameters monitored in the barn and basic utility properties of the animals. Study group consists of three breeds of sheep, which considers the effect of measured values on their performance. A subsequent comparison of the breeds themselves.
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Factors influencing the escape and spread of harmful substances
TESAŘ, Martin
Currently, harmful substances are released to the air more often and they threaten the safety of people because of their increasing amount being operated, stored and transported in the Czech Republic. The present thread is that the disasters in which harmful substances are released do not occur sporadically. Unintentional release may appear during their treatment, storage or transportation for many reasons, especially due to a natural disaster, technical cause or human failure. New causes of release have occurred recently {--} malicious intent and terrorist attack.This thesis creates a complex view of the branches of science and other areas dealing with the spread of harmful substances in the air. Emission of harmful substances is influenced by many factors which are very difficult or sometimes impossible to model mathematically. There exist a lot of mathematical models which differ according to the factor they treat. They concern models of outflow, dispersion and evaporation.The fire brigade in České Budějovice uses only one calculation model for estimating the emission of harmful substances - model ROZEX 2001.The result of this thesis may be used as a model for analysis and assessment of harmful substance release.
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Fluidická oscilátorová ústrojí založená na „Aerodynamickém Paradoxu“
Tesař, Václav
Discussed unusual flow-induced oscillation mechanism is based on an old but nearly forgotten phenomenon contradicting simple logic (motion opposing the direction of incoming flow). The author proposed using this mechanism in a number of interesting fluidic devices. The paper concentrates on observed existence of two different vibration regimes and the fact that the transition between these regimes exhibits a local maximum of Strouhal number Sh.
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Tlakem poháněná mikrofluidika
Tesař, Václav
Microfluidics is a new field of fluid flow generation and control at small scales, making possible fundamental changes in some engineering and biomedical fields. Particular advantages bring devices operating without moving parts – but at the usually small Reynolds number it is difficult to use jet inertia,upon which no-moving-part fluidics is based. The paper presents, on an example, a solution: flow assisted - or downright driven - by applied pressure difference.
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Mechano/fluidická zařízení využívající „aerodynamický paradox“
Tesař, Václav
A mechanism of aerodynamically excited vibration of a movable or elastic solid body was investigated and suggested for use in a number of fluidic (or mechano/fluidic) devices. The vibration is based on a phenomenon little known and so far practically not used, despite of its very old history. The effect leads to an alternatingdirection of a fluid force acting a movable object exposed to fluid flow. One of the directions is interesting: it is the very opposite to what an uninitiated observer may expect. Early investigations of this "paradox" by the present author in 1971 became recently of renewed interest because of the possible topical use in biosensors.
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