. . "Efekt stla\u010Ditelnosti p\u0159i identifikaci v\u00EDru"@cs . "P(IAA200600801), Z(AV0Z20600510)" . "It is shown that from the four most popular vortex-identification schemes (Q, \u0394, \u03BB2, and \u03BBci) only the \u0394-criterion and the associated \u03BBci-criterion are extendable to compressible flows. Both criteria fulfill a specific condition conveniently expressed for compressible flows in terms of the invariants of the deviatoric part of the velocity-gradient tensor. It should be noted that if the Q-criterion is a priori redefined in terms of a deviatoric part of the strain-rate tensor, it will also be applicable to compressible flows."@en . . "[897DE0FD8D8A]" . . . "0001-1452" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "2" . . . . . "vortex; vortex identification; compressible flows; compressibility effect"@en . "RIV/67985874:_____/09:00321273" . . "3"^^ . "Compressibility effect in vortex identification"@en . "1"^^ . . "Kol\u00E1\u0159, V\u00E1clav" . . . "Compressibility effect in vortex identification" . "307914" . . . "1"^^ . "Efekt stla\u010Ditelnosti p\u0159i identifikaci v\u00EDru"@cs . . "47" . "Je uk\u00E1z\u00E1no, \u017Ee ze \u010Dty\u0159 nejpopul\u00E1rn\u011Bj\u0161\u00EDch metod identifikace v\u00EDr\u016F (Q, \u0394, \u03BB2 a \u03BBci) pouze \u0394-krit\u00E9rium a p\u0159idru\u017Een\u00E9 \u03BBci-krit\u00E9rium jsou roz\u0161i\u0159iteln\u00E9 pro stla\u010Diteln\u00E9 proud\u011Bn\u00ED. Ob\u011B krit\u00E9ria spl\u0148uj\u00ED specifickou podm\u00EDnku pro stla\u010Diteln\u00E9 proud\u011Bn\u00ED vhodn\u011B vyj\u00E1d\u0159enou prost\u0159ednictv\u00EDm invariant\u016F deviatorick\u00E9 \u010D\u00E1sti tenzoru rychlostn\u00EDho gradientu. Nutno poznamenat, \u017Ee pokud Q-krit\u00E9rium bude a priori p\u0159edefinov\u00E1no prost\u0159ednictv\u00EDm deviatorick\u00E9 \u010D\u00E1sti tenzoru rychlosti deformace, bude rovn\u011B\u017E pou\u017Eiteln\u00E9 pro stla\u010Diteln\u00E9 proud\u011Bn\u00ED."@cs . . "AIAA Journal" . "RIV/67985874:_____/09:00321273!RIV09-AV0-67985874" . "Compressibility effect in vortex identification" . . "Compressibility effect in vortex identification"@en . "It is shown that from the four most popular vortex-identification schemes (Q, \u0394, \u03BB2, and \u03BBci) only the \u0394-criterion and the associated \u03BBci-criterion are extendable to compressible flows. Both criteria fulfill a specific condition conveniently expressed for compressible flows in terms of the invariants of the deviatoric part of the velocity-gradient tensor. It should be noted that if the Q-criterion is a priori redefined in terms of a deviatoric part of the strain-rate tensor, it will also be applicable to compressible flows." . "000263047200018" .