000014521 001__ 14521
000014521 005__ 20161115100154.0
000014521 04107 $$aeng
000014521 046__ $$k2016-08-21
000014521 100__ $$aXi, Heng-Dong
000014521 24500 $$aThe Role of Higher Order Flow Modes in Turbulent Thermal Convection

000014521 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014521 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014521 506__ $$arestricted
000014521 520__ $$2eng$$aWe present experimental studies of higher order flow modes in turbulent thermal convection in cells of aspect ratio (Γ) 1 and 0.5. We found that in both Γ = 1 and Γ = 0.5 cells the first mode, which corresponds to the large-scale circulation (LSC), dominates the flow, the remaining higher order modes are very weak . While during the cessation/reversal the second mode (quadrupole mode) dominates the flow. The experiment reveals that the second mode and the remaining higher order modes play important roles in the reversal/cessation of the LSC. In addition, it is found that the usually-referred cessation event is not the cessation of the entire flow but only the cessation of the first mode (LSC).We also show direct evidence that the first mode is more efficient for heat transfer.

000014521 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014521 653__ $$a

000014521 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014521 720__ $$aXi, Heng-Dong
000014521 8560_ $$ffischerc@itam.cas.cz
000014521 8564_ $$s143871$$uhttps://invenio.itam.cas.cz/record/14521/files/TS.FM05-4.04.pdf$$yOriginal version of the author's contribution as presented on CD,  page 745, code TS.FM05-4.04
.
000014521 962__ $$r13812
000014521 980__ $$aPAPER