Unsteady natural convection in a triangular enclosure induced by absorption of radiation

Lei, Chengwang, and Patterson, John C (2002) Unsteady natural convection in a triangular enclosure induced by absorption of radiation. Journal of Fluid Mechanics, 460. pp. 181-209.

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Abstract

The authors have previously reported a model experiment on the unsteady natural convection in a triangular domain induced by the absorption of solar radiation. This issue is reconsidered here both analytically and numerically. The present study consists of two parts: a scaling analysis and a numerical simulation. The scaling analysis for small bottom slopes reveals that a number of flow regimes are possible depending on the Rayleigh number and the relative value of certain non-dimensional parameters describing the flow. In a typical situation, the flow can be classified broadly into a conductive, a transitional or a convective regime determined merely by the Rayleigh number. Proper scales have been established to quantify the flow properties in each of these flow regimes. The numerical simulation has verified the scaling results.

Item ID: 649
Item Type: Article (Refereed Research - C1)
Keywords: natural convection, triangular enclosure, solar radiation, scaling analysis, numerical simulation
Additional Information:

Reproduced with permission from Journal of Fluid Mechanics, Cambridge University Press. © 2002 Cambridge University Press. Lei, Chengwang, and Patterson, John C. (2002) Unsteady natural convection in a triangular enclosure induced by absorption of radiation. Journal of Fluid Mechanics, 460. pp. 181-209. http://journals.cambridge.org/flm

ISSN: 1469-7645
Date Deposited: 23 Oct 2006
FoR Codes: 09 ENGINEERING > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics @ 60%
09 ENGINEERING > 0915 Interdisciplinary Engineering > 091505 Heat and Mass Transfer Operations @ 30%
09 ENGINEERING > 0915 Interdisciplinary Engineering > 091508 Turbulent Flows @ 10%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 80%
96 ENVIRONMENT > 9609 Land and Water Management > 960999 Land and Water Management of Environments not elsewhere classified @ 20%
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