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    Numerical Study of Conjugate Natural Convection from Discrete Heat Sources.

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    Publication date
    2015
    Author
    Gdhaidh, Farouq A.S.
    Hussain, Khalid
    Qi, Hong Sheng
    Keyword
    CFD, Conjugate heat transfer, Control volume, Natural convection, Rayleigh number, Thermal conductivity
    Peer-Reviewed
    yes
    
    Metadata
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    Abstract
    The coupling between natural convection and conduction within rectangular enclosure was investigated numerically. Three separate heat sources were flush mounted on a vertical wall and an isoflux condition was applied at the back of heat sources. The governing equations were solved using control volume formulation. A modified Rayleigh number and a substrate/fluid thermal conductivity ratio were used in the range 10^4 −10^7 and 10−10^3 respectively. The investigation was extended to examine high thermal conductivity ratio values. The results illustrated that, when Rayleigh number increased the dimensionless heat flux and local Nusselt number increased and the boundary layers along hot, cold and horizontal walls were reduced significantly. An opposite behaviour for the thermal spreading in the substrate and the dimensionless temperature, were decreased for higher Rayleigh number. Moreover, the thermal spreading in the substrate increased for higher substrate conductivity, which affected the temperature level. However the effect of the substrate is negligible when the thermal conductivity ratio higher than 1,500.
    URI
    http://hdl.handle.net/10454/7860
    Version
    No full-text available in the repository
    Citation
    Gdhaidh FAS, Hussain K and Qi HS (2015) Numerical Study of Conjugate Natural Convection from Discrete Heat Sources. Transactions on Engineering Technologies, World Congress on Engineering 2014. New York: Springer. Chapter 1, pp. 1-15.
    Link to publisher’s version
    http://dx.doi.org/10.1007/978-94-017-9804-4_1
    Type
    Book chapter
    Notes
    The full text of book chapters are not available for self deposit under the Publisher's copyright restrictions.
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    Engineering and Informatics Publications

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