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    An experimental study on thermal circulation driven by horizontal differential heating

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    Wang_Huang.pdf (678.8Kb)
    Date
    2005-09-27
    Author
    Wang, Wei  Concept link
    Huang, Rui Xin  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/2753
    As published
    https://doi.org/10.1017/S002211200500577X
    DOI
    10.1017/S002211200500577X
    Abstract
    Circulation driven by horizontal differential heating is studied, using a double-walled Plexiglas tank (20×15×2.5 cm3) filled with salt water. For instances of heating/cooling from above and below, results indicate that there is always quasi-equilibrium circulation. In contrast to most previous results from experimental/ numerical studies, circulation in our experiments appears in the form of a shallow cell adjacent to the boundary of thermal forcing. The non-dimensional stream-function maximum confirms the 1/5-power law of Rossby, Ψ ∼Ra1/5 L . Dissipation rate measured in the experiments appears to be consistent with theory. For cases of heating/cooling from a sloping bottom, circulation is similar to cases with a flat bottom; circulation is strong if heating is below cooling, but it is rather weak if heating is above cooling. Nevertheless, circulation in all cases is visible to the naked eye.
    Description
    Author Posting. © Cambridge University Press, 2005. This article is posted here by permission of Cambridge University Press for personal use, not for redistribution. The definitive version was published in Journal of Fluid Mechanics 540 (2005): 49-73, doi:10.1017/S002211200500577X.
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    • Physical Oceanography (PO)
    Suggested Citation
    Journal of Fluid Mechanics 540 (2005): 49-73
     
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