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Optimized design of turbine engine intake
Kubo, Michal ; Matějů, Jiří (referee) ; Popela, Robert (advisor)
This master thesis deals with design of a subsonic intake which is used to supply small jet engine integrate into the fuselage of agile small unmanned aerial vehicle (UAV). Some kinds of these intakes are listed in order to inspire and introduce future designers into this part of jet plane design. This thesis contains a small amount of theory about compressible flow, and necessary knowledge which are important to know before the very first attempt to design an intake. Two models were designed in order to prove that the theory listed in this thesis is useful and can be used as a guide in design process of subsonic intakes. Both designs have the same layout. S-duct design with one intake placed on the belly of fuselage was chosen. After CFD analysis of first model it was found that there are huge area with separated flow and vortex. Separated flow leads to big total pressure loss and pressure distortion. While designing the second model the emphasis was to avoid this vortex and improve flow conditions. This optimization was success and the second design have smaller pressure loss in compare to the first design. The difference is more than 50% at fly speed M=0,8.
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Formula Student Cooling System
Marek, Jiří ; Šebela, Kamil (referee) ; Janoušek, Michal (advisor)
The bachelor’s thesis deals with Formula Student cooling system, analysis of the current cooling system, it’s construction and possibilites for it’s improvements. Based on the research of Formula Student cooling systems, the water radiator was implemented into rear double diffuser in order to support aerodynamics and other important parameters for overal vehicle dynamics. Some of the computational resources were supplied by the project "e-Infrastruktura CZ" (e-INFRA LM2018140) provided within the program Projects of Large Research, Development and Innovations Infrastructures.
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Installations in the draft tube of the swirl turbine
Kilian, Ondřej ; Rudolf, Pavel (referee) ; Haluza, Miloslav (advisor)
Diploma thesis deals with design and exploration of installation in the draft tube of the swirl turbine. Use of the draft tube is defined in the first part, with illustration of energetical gain and efficiency of draft tube. Further the suitable shape of draft tube is studied by CFD computing. Design, research and evaluation of installation in the draft tube are solved in the main part.
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Steam backpressure turbine with integrated gearbox for the drive of the compressor
Votoupal, Adam ; Lokaj, Jakub (referee) ; Fiedler, Jan (advisor)
The master’s thesis deals with the design of steam back-pressure turbine with integrated gearbox for compressor drive according to given parameters. The first part of the thesis is literature review which comprises a general division of steam turbines, especially a description of the types of blading. Furthermore, it describes the conversion of energy in the steam turbine stage in detail. The second part of the thesis contains calculations and includes the design of the flow parts of the steam turbine, the design of the outlet and the integrated gearbox. Attached to this work are drawings of a simplified section of the steam turbine with a gearbox and the layout drawing of the machine.
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Venturi nozzle shape influence on hydrodynamic cavitation
Mračko, Patrik ; Balko, Marek (referee) ; Rudolf, Pavel (advisor)
Thesis focuses on the influence of various differently shaped diffusers of Venturi nozzle on the cavitation, which occurs during flow of liquid through said nozzle. Several models with different shapes of diffuser's wall were designed. Cavitation in these models was then investigated with numerical calculation. Two physical nozzles were made according to designed models and tested on experimental circuit. As part of the experiment, the cavitation inside the nozzles was measured with flow of liquid corresponding to a large range of cavitation numbers. Results of this experiment were used to determine which model of the nozzle is more effective in creation of a cavitating flow.
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Formula Student Cooling System
Marek, Jiří ; Šebela, Kamil (referee) ; Janoušek, Michal (advisor)
The bachelor’s thesis deals with Formula Student cooling system, analysis of the current cooling system, it’s construction and possibilites for it’s improvements. Based on the research of Formula Student cooling systems, the water radiator was implemented into rear double diffuser in order to support aerodynamics and other important parameters for overal vehicle dynamics. Some of the computational resources were supplied by the project "e-Infrastruktura CZ" (e-INFRA LM2018140) provided within the program Projects of Large Research, Development and Innovations Infrastructures.
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Design and Realization of Acoustic Treatment of Small Recording Studio
Tkadlec, Vojtěch ; Husník, Libor (referee) ; Schimmel, Jiří (advisor)
This bachelor thesis deals with the topic of acoustic properties of an enclosed space, their detection and modification. The thesis examines the acoustic properties of a small enclosed space, which were determined by simulation using a virtual 3D model and subsequently verified by measurement. After finding out the properties, a substantial part was also devoted to their modification, where the task was to design the acoustic elements so that the resulting length of the reverberation time corresponds to the optimal values for a small recording studio. The design of the elements is followed by their construction, followed by a re-measurement of the space. Furthermore, the work summarizes the principles of modeling and simulation of 3D models.
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Steam backpressure turbine with integrated gearbox for the drive of the compressor
Votoupal, Adam ; Lokaj, Jakub (referee) ; Fiedler, Jan (advisor)
The master’s thesis deals with the design of steam back-pressure turbine with integrated gearbox for compressor drive according to given parameters. The first part of the thesis is literature review which comprises a general division of steam turbines, especially a description of the types of blading. Furthermore, it describes the conversion of energy in the steam turbine stage in detail. The second part of the thesis contains calculations and includes the design of the flow parts of the steam turbine, the design of the outlet and the integrated gearbox. Attached to this work are drawings of a simplified section of the steam turbine with a gearbox and the layout drawing of the machine.
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