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  • Exact approximations for skin friction coefficient and convective heat transfer coefficient for a class of power law fluids flow over a semi-infinite plate: Results from similarity solutions

    Author(s)
    Jafarimoghaddam, Amin
    Aberoumand, Sadegh
    Griffith University Author(s)
    Aberoumand, Sadegh
    Year published
    2017
    Metadata
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    Abstract
    In the present work, it is aimed to derive exact formulations for skin friction coefficient (Cf) and convective heat transfer coefficient (h) for power law fluids with 0.8 < n < 1.2 flow over a semi-infinite plate and with the constant wall temperature boundary condition. Similarity analysis was employed to solve the problem for 410,000 cases with different power law indexes (n) and Prandtl numbers (0.1 < Pr < 1000). Finally, based on the acquired data from similarity solutions, exact approximations (with R-Square ∼ 1) are proposed for Cf and also h. These exact formulations can be considered as replaces for the former ones ...
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    In the present work, it is aimed to derive exact formulations for skin friction coefficient (Cf) and convective heat transfer coefficient (h) for power law fluids with 0.8 < n < 1.2 flow over a semi-infinite plate and with the constant wall temperature boundary condition. Similarity analysis was employed to solve the problem for 410,000 cases with different power law indexes (n) and Prandtl numbers (0.1 < Pr < 1000). Finally, based on the acquired data from similarity solutions, exact approximations (with R-Square ∼ 1) are proposed for Cf and also h. These exact formulations can be considered as replaces for the former ones in the literature for Newtonian fluids (n = 1).
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    Journal Title
    Engineering Science and Technology, an International Journal
    Volume
    20
    Issue
    3
    DOI
    https://doi.org/10.1016/j.jestch.2016.10.020
    Subject
    Environmental sciences
    Science & Technology
    Technology
    Engineering, Multidisciplinary
    Engineering
    Exact approximations
    Publication URI
    http://hdl.handle.net/10072/408722
    Collection
    • Journal articles

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