000014757 001__ 14757
000014757 005__ 20161115100201.0
000014757 04107 $$aeng
000014757 046__ $$k2016-08-21
000014757 100__ $$aStroh, Alexander
000014757 24500 $$aSecondary vortices over spanwise heterogeneous roughness

000014757 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014757 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014757 506__ $$arestricted
000014757 520__ $$2eng$$aA spanwise heterogeneity of roughness is known to lead to the formation of large-scale secondary motions. The secondary motions are investigated based on the data sets extracted from direct numerical simulations (DNS) of fully developed turbulent channel flow where streamwise stripes of modeled rough surface with varying spanwise extension and roughness layer thickness are introduced. In order to study the character of the secondary flow structures, the calculated flow fields are further post-processed by means of streamline-based topology analysis. The extracted topology maps indicate that stronger secondary motions occur for wider roughness stripes and thicker roughness layer, while the height of the roughness layer appears to not alter the secondary motion topology.

000014757 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014757 653__ $$a

000014757 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014757 720__ $$aStroh, Alexander
000014757 8560_ $$ffischerc@itam.cas.cz
000014757 8564_ $$s217988$$uhttps://invenio.itam.cas.cz/record/14757/files/TS.FM15-1.02.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1506, code TS.FM15-1.02
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000014757 962__ $$r13812
000014757 980__ $$aPAPER