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 TVT, 2006, Volume 44, Issue 3, Pages 425–434 (Mi tvt1352)

Heat and Mass Transfer and Physical Gasdynamics

Coherent structures and jets in natural-convection flows

P. A. Anan'ev, P. K. Volkov

SPC "Turbocon", Kaluga

Abstract: Natural-convection flows are investigated using regularized Oberbeck–Boussinesq equations which are solved by the finite element method with the same order of approximating functions. Coherent structures are revealed in a square channel with heat-insulated side walls and ends of different temperature under conditions of certain orientation to the direction of the effect of gravity on the dividing line between the counter flows of hot and cold air. Jet flows are calculated which develop from the heated internal walls of a "submerged" channel. It is demonstrated that a maximum of the intensity of flows exists under conditions of variation of the channel orientation with respect to the direction of the force of gravity. For a square channel, the maximum of intensity is observed for nonzero angle between the longitudinal axis and the direction of the effect of gravity; in the case of a "submerged" channel, this maximum is observed for zero angle.

Full text: PDF file (1951 kB)

English version:
High Temperature, 2006, 44:3, 422–431

UDC: 532.516.5
PACS: 44.25.+t, 47.27.wg

Citation: P. A. Anan'ev, P. K. Volkov, “Coherent structures and jets in natural-convection flows”, TVT, 44:3 (2006), 425–434; High Temperature, 44:3 (2006), 422–431

Citation in format AMSBIB
\Bibitem{AnaVol06} \by P.~A.~Anan'ev, P.~K.~Volkov \paper Coherent structures and jets in natural-convection flows \jour TVT \yr 2006 \vol 44 \issue 3 \pages 425--434 \mathnet{http://mi.mathnet.ru/tvt1352} \elib{http://elibrary.ru/item.asp?id=9211154} \transl \jour High Temperature \yr 2006 \vol 44 \issue 3 \pages 422--431 \crossref{https://doi.org/10.1007/s10740-006-0052-9} \elib{http://elibrary.ru/item.asp?id=13521627} \scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-33745810195}