A numerical simulation of heat transfer in an enclosure with a nonlinear heat source

Two-dimensional simulations of natural convection driven by the absorption of nonuniform concentrated solar radiation in a molten binary salt-filled enclosure inclined at 0 ≤  ϕ  ≤ 60 are presented. The enclosure is volumetrically heated from the top boundary and accommodates a black rigid, heat-con...

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Bibliographic Details
Published in:Numerical heat transfer. Part A, Applications Applications, 2017-06, Vol.71 (11), p.1081-1093
Main Authors: Amber, I., O'Donovan, T. S.
Format: Article
Language:English
Subjects:
Absorption
Computer simulation
Enclosures
Finite element method
Heat transfer
Heat transmission
Inclination
Solar radiation
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Summary:Two-dimensional simulations of natural convection driven by the absorption of nonuniform concentrated solar radiation in a molten binary salt-filled enclosure inclined at 0 ≤  ϕ  ≤ 60 are presented. The enclosure is volumetrically heated from the top boundary and accommodates a black rigid, heat-conducting plate of finite thickness at the lower boundary, which aids in the generation of natural convective mixing at the lower boundary. The governing equations that account for the depth-dependent absorption of radiation are solved using the finite-element method. Numerical results reveal that increasing the inclination angles decreases the natural convection and higher Rayleigh promotes natural convection.
ISSN:1040-7782
1521-0634
DOI:10.1080/10407782.2017.1330093