Experimental study of flow and heat transfer characteristics of natural convection in an enclosure with horizontal parallel heated plates

Autor:	Akihiko Horibe, Rikio Shimoyama, Akira Sanada, Naoto Haruki
Rok vydání:	2012
Předmět:	Fluid Flow and Transfer Processes Flow visualization Natural convection Materials science business.industry Mechanical Engineering Enclosure Thermodynamics Rayleigh number Mechanics Condensed Matter Physics Nusselt number Vortex Physics::Fluid Dynamics Thermal insulation Heat transfer business
Zdroj:	International Journal of Heat and Mass Transfer. 55:7072-7078
ISSN:	0017-9310
DOI:	10.1016/j.ijheatmasstransfer.2012.07.021
Popis:	We conducted an experimental investigation of natural convection in an enclosure containing horizontal parallel heated plates. Our experimental setup was as follows: Two heated plates were arranged vertically in an enclosure. The temperature of the ceiling was maintained at a constant low temperature, while the other sides satisfied thermal insulation boundary conditions. We examined flow characteristics in the enclosure and heat transfer around the horizontal heated plates. In the region between the cooled ceiling and the upper heated surface, vortex motion occurred when the accompanying flow from the lower region interfered with the ascending flow. Heat transfer around the heated surface was enhanced by this vortex motion. In other regions, the flow circulated along the heated surfaces in all cases. Generally speaking, for each flow pattern, the Nusselt number was proportional to some power of the modified Rayleigh number.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ad6eef63027cce1601c6cb4be05d82d4 https://doi.org/10.1016/j.ijheatmasstransfer.2012.07.021 Zobrazit plný text záznamu Full Text from ScienceDirect