Average contra-rotation and co-rotation of line segments for flow field analysis

0474197 - MÚ 2018 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Šístek, Jakub - Kolář, Václav
Average contra-rotation and co-rotation of line segments for flow field analysis.
Journal of Physics: Conference Series. Vol. 822. Bristol: IOP, 2017, č. článku 012070. ISSN 1742-6596.
[15th Asian Congress of Fluid Mechanics (15ACFM). Kuching, Sarawak (MY), 21.11.2016-23.11.2016]
Grant CEP: GA ČR GA14-02067S
Institucionální podpora: RVO:67985840 ; RVO:67985874
Klíčová slova: fluid mechanics * contra-rotation
Obor OECD: Applied mathematics; Fluids and plasma physics (including surface physics) (UH-J)
http://iopscience.iop.org/article/10.1088/1742-6596/822/1/012070

The earlier concept of the average co-rotation of infinitesimal radial line segments near a point is extended to the case of contra-rotation. The tensor of the contra-rotation is introduced and averaged over all planar 'cross sections' going through the examined point. Both the average contra-rotation and co-rotation, representing shear-free quantities, are applied to describe a complex flow structure.
Trvalý link: http://hdl.handle.net/11104/0271305