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    Flow visualization of free convection in a vertical cylinder of water in the vicinity of the density maximum


    Cawley, Michael F. and McBride, P. (2004) Flow visualization of free convection in a vertical cylinder of water in the vicinity of the density maximum. International Journal of Heat and Mass Transfer, 47 (6-7). pp. 1175-1186. ISSN 0017-9310

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    Abstract

    Free convection in a vertical cylinder of water is studied in the vicinity of the density maximum at 4 °C. Results are presented both from cooling curve measurements (using a series of thermistors along the central axis of the cylinder) and from flow visualization experiments (using particle image velocimetry), and a comparison is made with simulations. The reversal of the overall flow direction as the temperature crosses the maximum density region gives rise to a plateau feature in the cooling curve, which may be explained by the formation of a rising toroidal structure along the column boundary. This feature effectively diverts flow away from the inner region of the cylinder, resulting in a temporary cessation of convective cooling within this region.

    Item Type: Article
    Additional Information: P.McB. gratefully acknowledges financial support from Enterprise Ireland, the state funding agency for pure research.
    Keywords: Flow visualization; free convection; vertical cylinder of water; density maximum;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 9944
    Identification Number: https://doi.org/10.1016/j.ijheatmasstransfer.2003.09.028
    Depositing User: Dr. Michael Cawley
    Date Deposited: 18 Sep 2018 13:51
    Journal or Publication Title: International Journal of Heat and Mass Transfer
    Publisher: Elsevier
    Refereed: Yes
    Funders: Enterprise Ireland (EI)
    URI:

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