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Design systems used in the field of electrical apparatuses
Stejskal, Jiří ; Krejčí, Jan (referee) ; Valenta, Jiří (advisor)
Bachelor´s thesis is engaged on the base of submitter´s requests company OEZ, s.r.o. and is divided into two parts. The first part of work deals with the most often used 2D CAD systems that are used by designers according to their answers in the area of suggestion of electric switchboards low voltage. In the work are described main possibilities of these systems, then what kinds of data format are supported by them. In the second part of the work are described programs established on calculation of warming switchboards. It goes about programs, which supply concrete producer of switchboard case, and further programs based on method of final elements and method of final volume, which enable graphic representation of results.
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Simulation of particle transport in inclined pipeline by using combination of CFD and DEM
Mildner, Michael ; Konfršt, Jiří ; Kysela, Bohuš ; Chára, Zdeněk ; Vlasák, Pavel
Numerical flow simulation of scattered coarse-grained suspensions (hydrotransport, separators, etc.) requires the use of calculations for multiphase flow. Assuming the suspension flow (eg. water and solid particles) in closed profiles without air access, the task can be simplified to a two-phase flow (water-solid particles). A suitable tool for calculating such two-phase flow is the combination of the finite volume method FVM, with the discrete element method DEM. The discrete element method is used to solve collisions between individual particles, which is a prerequisite for a real solution of more concentrated suspension flow. Numerical simulation was performed on a simple geometry of inclined pipeline, where the obtained results were compared with the results obtained on the experimental slurry transport route equipped with a foldable part.
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Design systems used in the field of electrical apparatuses
Stejskal, Jiří ; Krejčí, Jan (referee) ; Valenta, Jiří (advisor)
Bachelor´s thesis is engaged on the base of submitter´s requests company OEZ, s.r.o. and is divided into two parts. The first part of work deals with the most often used 2D CAD systems that are used by designers according to their answers in the area of suggestion of electric switchboards low voltage. In the work are described main possibilities of these systems, then what kinds of data format are supported by them. In the second part of the work are described programs established on calculation of warming switchboards. It goes about programs, which supply concrete producer of switchboard case, and further programs based on method of final elements and method of final volume, which enable graphic representation of results.
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