Heat transfer through ferrofluids as a function of the magnetic field strength

Peter J. Stiles, Ferlinda Lin, Peter J. Blennerhassett

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    A theory is presented and is used to estimate weakly supercritical heat transport through a horizontal layer of vertically magnetized ferrofluid over a large range of magnetic field strengths. Finlayson's earlier analysis of the linear thermoconvective stability problem (J. Fluid Mech.40, 753, 1970) contains a parameter (M3) related to nonlinearity in the magnetization curve of the ferrofluid. This parameter is reinterpreted and we show that for typical models of ferrofluid magnetization it is restricted to a much narrower range of values than the examples of Finlayson suggest. For any fixed value of the ratio of the Rayleigh number to the critical Rayleigh number, the Nusselt number is always larger when the liquid layer is heated from above than when the layer is heated from below.

    Original languageEnglish
    Pages (from-to)256-258
    Number of pages3
    JournalJournal of Colloid and Interface Science
    Issue number1
    Publication statusPublished - Jan 1993


    Dive into the research topics of 'Heat transfer through ferrofluids as a function of the magnetic field strength'. Together they form a unique fingerprint.

    Cite this