000013926 001__ 13926
000013926 005__ 20161115094005.0
000013926 04107 $$aeng
000013926 046__ $$k2016-08-21
000013926 100__ $$aYang, Changwei
000013926 24500 $$aFlow characteristics and structural stability in a ventilated cabin mock-up

000013926 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000013926 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000013926 506__ $$arestricted
000013926 520__ $$2eng$$aAirflow movement is one of the most important physical factors greatly influencing contaminants transmission in aircraft cabin. Since various perturbations are hard to control and experimental measurements are hard to handle in full-size aircraft cabin, the researches on instantaneous characteristics are seldom reported. In this work, PIV experimental investigations on the structural stability of velocity fields in a bidirectional ventilated cabin mock-up are conducted. It indicates that the velocity field is obviously unstable and there are coherent autooscillation of the large-scale flow structures in this cabin mock-up. The spatial and temporal behaviors of the large-scale flow structures and the evolution of topological characteristics of the velocity fields are presented. The structural stability theory is also used to further interpret the unstable phenomena of the velocity fields. Our present findings can serve as a base for forthcoming study of contaminants transmission and a simplified model for problem of cabin ventilation.

000013926 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013926 653__ $$a

000013926 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000013926 720__ $$aYang, Changwei
000013926 8560_ $$ffischerc@itam.cas.cz
000013926 8564_ $$s172440$$uhttps://invenio.itam.cas.cz/record/13926/files/PO.FM07-1.19.135.pdf$$yOriginal version of the author's contribution as presented on CD, XMLout( page 1021, code PO.FM07-1.19.135).
000013926 962__ $$r13812
000013926 980__ $$aPAPER