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Reduced order model of the swirling flow
Urban, Ondřej ; SUSAN-RESIGA, Romeo Florin (oponent) ; Uruba, Václav (oponent) ; Rudolf, Pavel (vedoucí práce)
This doctoral thesis is aimed at studying the vortex rope phenomenon. For this purpose, a new swirl generator capable of regulating the swirl intensity was designed. The behavior of the vor-tex rope was studied both numerically and experimentally. Scale-resolving numerical simulati-ons were employed, visualization methods based on volume rendering were proposed, and di-fferent vortex criteria were tested. Several flow field decomposition methods were studied. Fi-nally, methods for extracting quasiperiodic patterns were proposed. These methods enabled the construction of a reduced-order model for a range of operating conditions.

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