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    Investigation of Simultaneous Effects of Surface Roughness, Porosity, and Magnetic Field of Rough Porous Microfin Under a Convective-Radiative Heat Transfer for Improved Microprocessor Cooling of Consumer Electronics

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    oguntala_et_al_2019.pdf (4.438Mb)
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    Publication date
    2019-02
    Author
    Oguntala, George A.
    Sobamowo, G.
    Eya, Nnabuike N.
    Abd-Alhameed, Raed A.
    Keyword
    Electronic cooling
    Thermal management
    Heatsink
    Micro-fin
    Surface roughness
    Microprocessor cooling
    Rights
    © 2019 IEEE. Reproduced in accordance with the publisher's self-archiving policy. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Peer-Reviewed
    Yes
    
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    Abstract
    The ever-increasing demand for high-processing electronic systems has unequivocally called for improved microprocessor performance. However, increasing microprocessor performance requires increasing power and on-chip power density, both of which are associated with increased heat dissipation. Electronic cooling using fins have been identified as a reliable cooling approach. However, an investigation into the thermal behaviour of fin would help in the design of miniaturized, effective heatsinks for reliable microprocessor cooling. The aim of this paper is to investigates the simultaneous effects of surface roughness, porosity and magnetic field on the performance of a porous micro-fin under a convective-radiative heat transfer mechanism. The developed thermal model considers variable thermal properties according to linear, exponential and power laws, and are solved using Chebychev spectral collocation method. Parametric studies are carried using the numerical solutions to establish the influences of porosity, surface roughness, and magnetic field on the microfin thermal behaviour. Following the results of the simulation, it is established that the thermal efficiency of the micro-fin is significantly affected by the porosity, magnetic field, geometric ratio, nonlinear thermal conductivity parameter, thermogeometric parameter and the surface roughness of the micro-fin. However, the performance of the micro-fin decreases when it operates only in a convective environment. In addition, we establish that the fin efficiency ratio which is the ratio of the efficiency of the rough fin to the efficiency of the smooth fin is found to be greater than unity when the rough and smooth fins of equal geometrical, physical, thermal and material properties are subjected to the same operating condition. The investigation establishes that improved thermal management of electronic systems would be achieved using rough surface fins with porosity under the influences of the magnetic field.
    URI
    http://hdl.handle.net/10454/16639
    Version
    Accepted Manuscript
    Citation
    Oguntala GA, Sobamowo G, Eya NN et al (2019) Investigation of Simultaneous Effects of Surface Roughness, Porosity, and Magnetic Field of Rough Porous Microfin Under a Convective-Radiative Heat Transfer for Improved Microprocessor Cooling of Consumer Electronics. IEEE Transactions on Components, Packaging and Manufacturing Technology. 9(2): 235-246.
    Link to publisher’s version
    https://doi.org/10.1109/TCPMT.2018.2878737
    Type
    Article
    Collections
    Engineering and Informatics Publications

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