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A note on integral vortex strength
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SYSNO ASEP 0340294 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A note on integral vortex strength Tvůrce(i) Kolář, Václav (UH-J) SAI, ORCID, RID Zdroj.dok. Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X
Roč. 58, č. 1 (2010), s. 23-28Poč.str. 6 s. Forma vydání on-line - on-line Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova circulation ; unsteady Taylor vortex ; vortex intensity ; vortex strength ; vorticity ; vorticity decomposition Vědní obor RIV BK - Mechanika tekutin CEP IAA200600801 GA AV ČR - Akademie věd CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000275829400003 DOI 10.2478/v10098-010-0003-3 Anotace Controversial aspects of the conventional and widely used concept of the integral vortex strength are briefly discussed. The strength of a vortex is usually calculated as the circulation along the vortex boundary, or equivalently due to Green’s theorem, as the surface integral of vorticity over the planar vortex cross section. However, the local effect of an arbitrary "superimposed shear" is fully absorbed by vorticity what makes the circulation a shear-biased vortex characteristic. The present paper shows that different vortexstrength models can be derived on the basis of different local vortex intensities proposed in the literature. The outcome of these models naturally differs, even for an ideally axisymmetric vortex. Three different vortex-strength models are compared and discussed by examining the unsteady Taylor vortex. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2010
Počet záznamů: 1