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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.01 seconds. 
Comparison of modal properties of steam turbine impeller with blades of different lengths
 Havlásek, Michal ; Chromek, Lukáš (referee) ; Lošák, Petr (advisor)
The presented master's thesis deals with the safety assessment of several variants of the impeller with different blades length. The motivation for creating this thesis is to find the solution of the problem situation which is characterized by the breakdown of the steam turbine impeller with blades length of 30mm. As confirmed in this thesis, the impeller with blades length of 30mm is operated in the resonance. Likewise, according to the technical standard ČSN EN ISO 10437 its operation is not safe. As the correction action for the problem situation solving is proposed the prolongation of the impeller's blades. The safety is detected for six variants of impeller with dierent blades length. For each variant, there is executed a modal analysis and its results are drawn up into the Campbell diagram. On the basis of this diagram, the safety of individual components is evaluated. The last part of the masters thesis concerns with the examination of the influence of blades length on the modal properties of the impeller.
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Research study of „Tilt pad bearings“ (computational and experimental modelling)
 Havlásek, Michal ; Chlud, Michal (referee) ; Malenovský, Eduard (advisor)
The bachelor’s thesis is focused on the computational and experimental modelling of the tilting pad bearings. The computational and experimental modelling is based on solving the lubrication theory provided by English professor Osborn Reynolds, published in 1886. The main part of the thesis is the description of the most widely used computational models, especially TEHD analysis, and the description of the only two experimental devices for the testing of the tilting pad bearings. The thesis is supplemented with the prediction of the development of the computational modelling in the near future.
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National Repository of Grey Literature : 12 records found   previous11 - 12  jump to record:
See also: similar author names
4 Havlásek, Martin
2 Havlásek, Miroslav
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