BUOYANCY-INDUCED FLOWS IN SPHERICAL ANNULAR SECTORS: A NUMERICAL STUDY

Autor:	Chandrasekhar Thamire, Neil T. Wright
Rok vydání:	1998
Předmět:	Physics::Fluid Dynamics Numerical Analysis Buoyancy Heat transfer engineering Grashof number Reverse transition Geometry engineering.material Concentric Condensed Matter Physics Isothermal process Mathematics
Zdroj:	Numerical Heat Transfer, Part A: Applications. 33:107-130
ISSN:	1521-0634 1040-7782
DOI:	10.1080/10407789808913930
Popis:	Calculated buoyancy-induced flows and heat transfer are presented for concentric spherical annular sectors defined by two isothermal spherical walls and an insulated radial wall at the sector angle. Over the range of geometric parameters examined, these results resemble published results for spherical annuli at low Grashof number Gr. As Gr increases, multicellular flows develop, followed by a reverse transition to unicellular flows. Reducing Gr reveals a second set of solutions, unicellular flows, for Gr between the transition and reverse transition, defining a hysteresis loop. Significant differences in local heat transfer result from these two solutions at the same Gr.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::28d8c97c76b70bbb1b8a8b0d5d781ac9 https://doi.org/10.1080/10407789808913930 Zobrazit plný text záznamu