Počet záznamů: 1
Decomposition Methods in Turbulence Research
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SYSNO ASEP 0369551 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Decomposition Methods in Turbulence Research Tvůrce(i) Uruba, Václav (UT-L) RID, ORCID Celkový počet autorů 1 Zdroj.dok. Proceedings of the International Conference Experimental Fluid Mechanics 2011. - Liberec : Technical University of Liberec, 2011 / Vít T. ; Dančová P. ; Novotný P. - ISBN 978-80-7372-784-0 Rozsah stran s. 24-44 Poč.str. 21 s. Forma vydání CD - CD Akce Experimental Fluid Mechanics 2011 Datum konání 22.11.2011-25.11.2011 Místo konání Jičín Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova turbulence ; decomposition ; spatio-temporal data Vědní obor RIV BK - Mechanika tekutin CEP GA101/08/1112 GA ČR - Grantová agentura ČR GAP101/10/1230 GA ČR - Grantová agentura ČR CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000304449600095 EID SCOPUS 84883065560 DOI 10.1051/epjconf/20122501095 Anotace Nowadays we have the dynamical velocity vector field of turbulent flow at our disposal coming thanks advances of either mathematical simulation (DNS) or of experiment (time-resolved PIV). Unfortunately there is no standard method for analysis of such data describing complicated extended dynamical systems, which is characterized by excessive number of degrees of freedom. An overview of candidate methods convenient to spatiotemporal analysis for such systems is to be presented. Special attention will be paid to energetic methods including Proper Orthogonal Decomposition (POD) in regular and snapshot variants as well as the Bi-Orthogonal Decomposition (BOD) for joint space-time analysis. Then, stability analysis using Principal Oscillation Patterns (POPs) will be introduced. Finally, the Independent Component Analysis (ICA) method will be proposed for detection of coherent structures in turbulent flow-field defined by time-dependent velocity vector field. Principle and some practical aspects of the methods are to be shown. Special attention is to be paid to physical interpretation of outputs of the methods listed above. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2012
Počet záznamů: 1