National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
2-D external aerodynamics of an unusual shaped body
Mohyla, Daniel ; Gal, Pavel (referee) ; Dohnal, Miloslav (advisor)
This bachelor thesis is focused on analysis of flow over a cylindrical rod in 2-D space by using computational fluid dynamics (CFD) with turbulence models k- SST and k- SSTSAS. First part of this thesis is meant to be an introduction to the topic of extrernal flow and CFD. In this part the topics of flow separation, turblence modeling and various related models are discussed. Second part deals with the description of simulation case inside of open source CFD software called OpenFOAM and the obtained results. In last part the disccusion about results is carried out and results are compared.
Relation between forces induced by fluid flow and dissipative processes in boundary layers
Mináriková, Petra ; Maršík, František (advisor) ; Lanzendörfer, Martin (referee)
Práce se zabývá vlivem disipativních proces· v mezních vrstvách, konkrétně vlivem viskozity tekutiny a dále vlivem difúze vodní páry ve vzduchu na vznik sil p·sobících na obtékaná tělesa. Z Croccovy věty plyne, že gradient entropie má sv·j podíl na vzniku cirkulace a d·sledkem toho i na vznik vztlakové síly. Práce zkoumá vznik vztlakové síly při obtékání rotujícího válce, v soft- waru FEniCS modeluje tuto situaci, porovnává s modelem nevazké nestlačitelné tekutiny a následně i s experimentem provedeným Ing. Zdeňkem Trávníčkem a Ing. Zuzanou Broučkovou. Taktéž zkoumá vznik vztlakové síly při vypařování na horní straně válce a srovnává s případem rotujícího válce. 1
2-D external aerodynamics of an unusual shaped body
Mohyla, Daniel ; Gal, Pavel (referee) ; Dohnal, Miloslav (advisor)
This bachelor thesis is focused on analysis of flow over a cylindrical rod in 2-D space by using computational fluid dynamics (CFD) with turbulence models k- SST and k- SSTSAS. First part of this thesis is meant to be an introduction to the topic of extrernal flow and CFD. In this part the topics of flow separation, turblence modeling and various related models are discussed. Second part deals with the description of simulation case inside of open source CFD software called OpenFOAM and the obtained results. In last part the disccusion about results is carried out and results are compared.

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