000013999 001__ 13999
000013999 005__ 20161115094007.0
000013999 04107 $$aeng
000013999 046__ $$k2016-08-21
000013999 100__ $$aPrabhu, Akhilesh
000013999 24500 $$aTorque scaling and mean velocity profiles in a wide-gap Taylor-Couette flow

000013999 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000013999 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000013999 506__ $$arestricted
000013999 520__ $$2eng$$aA wide-gap Taylor-Couette (T-C) configuration with a radius ratio of 0.1 is investigated through direct numerical simulation. Both axis-symmetric and fully three dimensional cases are simulated for a range of Reynolds numbers (Rea ) from 100 to 1000. Rotating inner cylinder and a stationary outer cylinder result in distributions of angular momentum near the walls which are susceptible to Gortler instability. Unlike plane Couette flow which exhibits symmetry about the mid plane, wide-gap Taylor-Couette flow owing to circular geometry, has distinct and sharply contrasted behaviour of flow at the two walls. Our investigations into the low Rea regime, shows the presence of circumferentially elongated eddies resembling Gortler vortices near the inner wall. These observations lend support to earlier studies which report experimental observations of near wall flow [3, 5, 6]. Mean angular momentum profiles show regions in the annulus with a negligible gradient. Further, scaling of the non-dimensional torque (G) with Rea is reported.

000013999 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013999 653__ $$a

000013999 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000013999 720__ $$aPrabhu, Akhilesh
000013999 8560_ $$ffischerc@itam.cas.cz
000013999 8564_ $$s131823$$uhttps://invenio.itam.cas.cz/record/13999/files/PO.FM14-1.17.180.pdf$$yOriginal version of the author's contribution as presented on CD, XMLout( page 1496, code PO.FM14-1.17.180).
000013999 962__ $$r13812
000013999 980__ $$aPAPER