000014612 001__ 14612
000014612 005__ 20161115100156.0
000014612 04107 $$aeng
000014612 046__ $$k2016-08-21
000014612 100__ $$aScheichl, Bernhard
000014612 24500 $$aCapillary effects and short-scale interaction in a weakly viscous supercritical overfall

000014612 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014612 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014612 506__ $$arestricted
000014612 520__ $$2eng$$aWe consider a thin liquid film past a semi-infinite horizontal plate under the action of gravity acting vertically, surface tension, and relatively low viscosity. This scenario comprises a manifold of effects at play, given the two disparate length scales involved: distance from jet impingement generating the layer to the trailing edge of the plate, height of the film. The yet not fully understood behaviour of a developed viscous film near the edge and previous studies on bores and hydraulic jumps in weakly viscous horizontal layers stimulate the present investigation. In sharp contrast to these, here the flow remains supercritical, and isolated regimes of strong viscous–inviscid interaction are dictated by the short length scale rather than the common shallow-water approximation. Specifically, we show how viscosity produces standing waves upstream of localised interaction and how weak capillarity modifies drastically the potential-flow singularity close to the edge, which in turn affects crucially its viscous regularisation.

000014612 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014612 653__ $$a

000014612 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014612 720__ $$aScheichl, Bernhard
000014612 8560_ $$ffischerc@itam.cas.cz
000014612 8564_ $$s130645$$uhttps://invenio.itam.cas.cz/record/14612/files/TS.FM08-3.04.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1058, code TS.FM08-3.04
.
000014612 962__ $$r13812
000014612 980__ $$aPAPER