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Design of a hydrodynamic seal of an axial pump with an annular motor
Jančík, Kryštof ; Fialová, Simona (referee) ; Pochylý, František (advisor)
This diploma thesis deals with the design of a hydrodynamic seal of an axial pump with an annular motor, and it does so in three main thematic planes: research of current knowledge, simulation and experimental. The research section provides an overview of a broad problem of magnetic fluid seals (ferrohydrodynamic (FHD) seals), current developments in the field of simulation of internal flow in magnetic fluid and in the field of application of FHD technology in sealing liquids. It also covers a wider context of potential use for mechanical circulatory support systems that have had a significant impact on the proposed concept of a novel axial FHD seal. The remaining two thematic planes deal with his design and experimental testing.
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Design of Vibroisolation Strut with Minimal Friction Losses
Jančík, Kryštof ; Mazůrek, Ivan (referee) ; Macháček, Ondřej (advisor)
This bachelor's thesis is focused on design of Vibroisolation Strut, whose damper uses magnetorheological (MR) fluid. In order to take the full advantage of semiactively controlled MR damper to provide a wide control range, it demands a low value of friction losses, which is mainly caused by used seals. The first part is dedicated to research of dampers, aiming to find the ideal design that ensures this demand. In this purpose, friction of some rod seals was also experimentally determined. Further, calculations which were necessary to determine the MR damper's damping characteristic were carried out and the function of its magnetic circuit was verified by using FEM software. The parameters of the final design of the strut were adjusted for using in an automatic washing machine.
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Design of a hydrodynamic seal of an axial pump with an annular motor
Jančík, Kryštof ; Fialová, Simona (referee) ; Pochylý, František (advisor)
This diploma thesis deals with the design of a hydrodynamic seal of an axial pump with an annular motor, and it does so in three main thematic planes: research of current knowledge, simulation and experimental. The research section provides an overview of a broad problem of magnetic fluid seals (ferrohydrodynamic (FHD) seals), current developments in the field of simulation of internal flow in magnetic fluid and in the field of application of FHD technology in sealing liquids. It also covers a wider context of potential use for mechanical circulatory support systems that have had a significant impact on the proposed concept of a novel axial FHD seal. The remaining two thematic planes deal with his design and experimental testing.
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Design of Vibroisolation Strut with Minimal Friction Losses
Jančík, Kryštof ; Mazůrek, Ivan (referee) ; Macháček, Ondřej (advisor)
This bachelor's thesis is focused on design of Vibroisolation Strut, whose damper uses magnetorheological (MR) fluid. In order to take the full advantage of semiactively controlled MR damper to provide a wide control range, it demands a low value of friction losses, which is mainly caused by used seals. The first part is dedicated to research of dampers, aiming to find the ideal design that ensures this demand. In this purpose, friction of some rod seals was also experimentally determined. Further, calculations which were necessary to determine the MR damper's damping characteristic were carried out and the function of its magnetic circuit was verified by using FEM software. The parameters of the final design of the strut were adjusted for using in an automatic washing machine.
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