Detail publikačního výsledku

Vortex Identification in Different Types of Flow

RUDOLF, P.

Originální název

Vortex Identification in Different Types of Flow

Anglický název

Vortex Identification in Different Types of Flow

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Lots of vortex definitions were devised to locate vortex cores and there is no common consensus on the best one. Four vortex identification methods were applied in this paper, namely pressure minimum, vorticity modulus, normalized helicity and Q - criterion for three different types of flow (steady flow in curved channel of rectangular cross-section, unsteady flow in elbow draft tube, unsteady flow over backward facing step). Each criterion has different performance for the particular flow type. But it can be very roughly generalized that pressure minimum is too coarse and and Q-criterion worke best. Finally it must be stressed that threshols specification plays key role for all criteria.

Anglický abstrakt

Lots of vortex definitions were devised to locate vortex cores and there is no common consensus on the best one. Four vortex identification methods were applied in this paper, namely pressure minimum, vorticity modulus, normalized helicity and Q - criterion for three different types of flow (steady flow in curved channel of rectangular cross-section, unsteady flow in elbow draft tube, unsteady flow over backward facing step). Each criterion has different performance for the particular flow type. But it can be very roughly generalized that pressure minimum is too coarse and and Q-criterion worke best. Finally it must be stressed that threshols specification plays key role for all criteria.

Klíčová slova v angličtině

vortex identification, criterion, helicity, vorticity

Autoři

RUDOLF, P.

Vydáno

16.02.2005

Nakladatel

Institute of Thermomechanics

Místo

Prague

ISBN

80-85918-92-7

Kniha

Topical Problems of Fluid Mechanics 2005

Strany od

91

Strany počet

4

BibTex

@inproceedings{BUT18451,
  author="Pavel {Rudolf}",
  title="Vortex Identification in Different Types of Flow",
  booktitle="Topical Problems of Fluid Mechanics 2005",
  year="2005",
  number="1",
  pages="4",
  publisher="Institute of Thermomechanics",
  address="Prague",
  isbn="80-85918-92-7"
}