Simulation numérique de la convection de Marangoni dans du Li-Br aqueux absorbant

Niccolo Giannetti*, Seiichi Yamaguchi, Kiyoshi Saito

*この研究の対応する著者

    研究成果: Article査読

    7 被引用数 (Scopus)

    抄録

    The Marangoni convection effect within absorptive films can be described as the behaviour that brings the boundary between adjoining phases to relapse into a state where the interfacial free energy is minimized as a consequence of the expansion and the contraction of the regions with low and high surface tension. Thus, surface tension gradients lead to a shear stress originating a fluid motion in proximity of the interface and consequently affecting the contingent heat and mass transfer process of absorptive mixtures. However, since the mechanism by which the related transport phenomena can be enhanced has not been clearly understood, neither the upper limit to the benefit provided nor the best surfactant additive is currently known. To provide a direct term of comparison with a nearly two-dimensional apparatus, to clarify the driving force of Marangoni convection and the related transfer performance enhancement within falling film absorbers, this work formulates a numerical model of the fundamental governing equations of vapour absorption in presence of variable surface tension.

    寄稿の翻訳タイトルNumerical simulation of Marangoni convection within absorptive aqueous Li-Br
    本文言語French
    ページ(範囲)176-184
    ページ数9
    ジャーナルInternational Journal of Refrigeration
    92
    DOI
    出版ステータスPublished - 2018 8月 1

    ASJC Scopus subject areas

    • 建築および建設
    • 機械工学

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