000014737 001__ 14737
000014737 005__ 20161115100200.0
000014737 04107 $$aeng
000014737 046__ $$k2016-08-21
000014737 100__ $$aOsawa, Kosuke
000014737 24500 $$aFlow structure and torque transition process of turbulent Taylor-Couette flow

000014737 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014737 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014737 506__ $$arestricted
000014737 520__ $$2eng$$ag Direct numerical simulations of Taylor-Couette flow form Re : 8000 to 25000 are carried out to investigate the process of the transition in the Reynolds number dependency of the mean torque. The velocity fluctuations are decomposed into the contributions of the Taylor vortices and remaining turbulent fluctuations. Distinct Reynolds number dependencies of these components are observed in the Reynolds shear stress and the torque transmission. The net contributions of these components to the mean torque are evaluated. Relative contributions of The Taylor vortex component is overtaken by the turbulent counterpart around Re : 15000. This Reynolds number is close to the torque transition Reynolds number in the literature. These results suggest that the torque transition can be explained by the competition between the contributions of azimuthally averaged Taylor vortex and the remaining turbulent components.

000014737 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014737 653__ $$a

000014737 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014737 720__ $$aOsawa, Kosuke
000014737 8560_ $$ffischerc@itam.cas.cz
000014737 8564_ $$s319925$$uhttps://invenio.itam.cas.cz/record/14737/files/TS.FM14-3.06.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1427, code TS.FM14-3.06
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000014737 962__ $$r13812
000014737 980__ $$aPAPER