000014725 001__ 14725
000014725 005__ 20161115100200.0
000014725 04107 $$aeng
000014725 046__ $$k2016-08-21
000014725 100__ $$aKobayashi, Hiromichi
000014725 24500 $$aEnergy transfer across scales around elliptic Burgers vortices

000014725 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014725 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014725 506__ $$arestricted
000014725 520__ $$2eng$$aSammafy In turbulence, vortices emerge and the energy transfer across scales mainly occurs around the vortices. It is known that the vortices are approximated as elliptic Burgers vortices. We analytically and numerically examined the energy transfer across scales around the elliptic Burgers vortices. We found that the regions of the forward scatter (energy transfer from large-scale to small-scale) have a double-peak structure around the vortex and those appear in the direction of the minimum eigenvalue of the velocity strain tensor whereas the regions of the backward scatter (energy transfer fiom small-scale to large-scale) with a double- peak structure emerge in the direction of the maximum eigenvalue. Those double-peak structures distribute as a quadrupole around the vortex. By integrating the energy transfer distribution around the vortex in the azimuthal direction, we revealed that the net energy transfer becomes the forward scatter and takes place at the centre of the vortex.

000014725 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014725 653__ $$a

000014725 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014725 720__ $$aKobayashi, Hiromichi
000014725 8560_ $$ffischerc@itam.cas.cz
000014725 8564_ $$s154253$$uhttps://invenio.itam.cas.cz/record/14725/files/TS.FM14-1.06.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1403, code TS.FM14-1.06
.
000014725 962__ $$r13812
000014725 980__ $$aPAPER