A Comprehensive Review of Natural Convection in Triangular Enclosures

Natural convection in triangular enclosures is an important problem. It displays well thegeneric attributes of this class of convection, with its dependence on enclosure geometry,orientation and thermal boundary conditions. It is particularly rich in its variety of flowregimes and thermal fields as well as having significant practical application. In this pa-per, a comprehensive view of the research area is sought by critically examining the ex-perimental and numerical approaches adopted in studies of this problem in the literature.Different thermal boundary conditions for the evolution of the flow regimes and thermalfields are considered. Effects of changes in pitch angle and the Rayleigh number on theflow and thermal fields are examined in detail. Although most of the past studies are inthe laminar regime, the review extends up to the recent studies of the low turbulent re-gime. Finally, areas of further research are highlighted. [DOI: 10.1115/1.4004290]Keywords: buoyancy-induced flows, flow fields, triangular enclosures

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