Stretching response of Rortex and other vortex-identification schemes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985840%3A_____%2F19%3A00510373" target="_blank" >RIV/67985840:_____/19:00510373 - isvavai.cz</a>
Alternative codes found
RIV/67985874:_____/19:00510373
Result on the web
<a href="http://hdl.handle.net/11104/0300921" target="_blank" >http://hdl.handle.net/11104/0300921</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.5127178" target="_blank" >10.1063/1.5127178</a>

Result language
angličtina
Original language name
Stretching response of Rortex and other vortex-identification schemes
Original language description
By considering a uniaxial stretching coupled with an inevitable uniform radial contraction for incompressible flow, a straightforward comparison of the stretching response for several popular vortex-identification criteria and the recently proposed vortex vector (Rortex) is presented. In addition, the outcome of the triple-decomposition method in terms of the residual vorticity tensor is employed due to its planar coincidence with Rortex. The stretching sensitivity of the examined schemes significantly differs and, consequently, reopens the persisting vortex-identification problem that the requirement of orbital compactness of the motion inside a vortex contradicts with the allowance for an arbitrary axial strain.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10102 - Applied mathematics

Project
<a href="/en/project/GA18-09628S" target="_blank" >GA18-09628S: Advanced flow-field analysis</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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