Number of the records: 1

A note on integral vortex strength

SYSNO ASEP	0340294
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	A note on integral vortex strength
Author(s)	Kolář, Václav (UH-J)_{SAI, ORCID, RID}
Source Title	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. 23-28
Number of pages	6 s.
Publication form	on-line - on-line
Language	eng - English
Country	SK - Slovakia
Keywords	circulation ; unsteady Taylor vortex ; vortex intensity ; vortex strength ; vorticity ; vorticity decomposition
Subject RIV	BK - Fluid Dynamics
R&D Projects	IAA200600801 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z20600510 - UH-J (2005-2011)
UT WOS	000275829400003
DOI	10.2478/v10098-010-0003-3
Annotation	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.
Workplace	Institute of Hydrodynamics
Contact	Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
Year of Publishing	2010

Number of the records: 1