000014645 001__ 14645
000014645 005__ 20161115100157.0
000014645 04107 $$aeng
000014645 046__ $$k2016-08-21
000014645 100__ $$aInasawa, Ayumu
000014645 24500 $$aExperimental study on drag reduction due to periodically heated wall

000014645 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014645 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014645 506__ $$arestricted
000014645 520__ $$2eng$$aFlow in a channel with spatially periodic wall heating is examined experimentally at Reynolds numbers below Re:20 and at the Rayleigh number based on the amplitude of the periodic heating and the channel half width Rap:3500, to verify the super-thermohydrophobic effect leading to a friction-drag reduction. Periodic heating with a non-dimensional wavenumber of 1 is applied at the lower wall while the temperature of the upper wall is uniform and kept constant at the average temperature of lower wall. The results show that steady separation bubbles are created by periodic heating, which separate the main stream from the wall. About 12% drag reduction is found at Re:1, demonstrating that separation bubbles due to the super-thermohydrophobic effect surely contribute to the friction drag reduction.

000014645 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014645 653__ $$a

000014645 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014645 720__ $$aInasawa, Ayumu
000014645 8560_ $$ffischerc@itam.cas.cz
000014645 8564_ $$s165703$$uhttps://invenio.itam.cas.cz/record/14645/files/TS.FM10-2.05.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1160, code TS.FM10-2.05
.
000014645 962__ $$r13812
000014645 980__ $$aPAPER