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Local transition to turbulence behind an obstacle for a nominally laminar flow

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dc.contributor.author Mazo A.
dc.contributor.author Okhotnikov D.
dc.date.accessioned 2018-09-19T22:09:57Z
dc.date.available 2018-09-19T22:09:57Z
dc.date.issued 2016
dc.identifier.issn 1995-0802
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/144792
dc.description.abstract © 2016, Pleiades Publishing, Ltd.The mechanisms of transition to turbulence in the middle wake behind an obstacle on the channel wall for a laminar flow have been studied. Using DNS, it has been shown that the transition to turbulence is mainly caused by the interaction of paired helical vortices generated at the side walls of the channel behind the rib. If the transverse size of these vortices reaches a half of the channel width, their contact causes periodic generation and separation of smaller vortex structures in the interaction area; here, the middle wake behind the obstacle is characterized by transition to turbulence. If the channel width is sufficiently large, the flow remains laminar. The influence of the distance between the side walls on the laminar-turbulent transition for Reynolds numbers ranging from 1500 to 3000.
dc.relation.ispartofseries Lobachevskii Journal of Mathematics
dc.subject channel flow
dc.subject direct numerical simulation
dc.subject helical vortices
dc.subject laminar-turbulent transition
dc.subject nominally laminar flow
dc.title Local transition to turbulence behind an obstacle for a nominally laminar flow
dc.type Article
dc.relation.ispartofseries-issue 3
dc.relation.ispartofseries-volume 37
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 360
dc.source.id SCOPUS19950802-2016-37-3-SID84971673157


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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