Numerical and experimental characterisation of a family of two-roll-mill flows

T. J. Price, T. Mullin, J. J. Kobine

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)


    Two–dimensional creeping flow generated by a two–roll mill in a cylindrical domain is investigated numerically and experimentally for arbitrary ratios Ø of the angular velocities of the inner cylinders. The Stokes flow in the two–roll–mill domain is computed for various values of Ø using a least–squares approach, and it is compared with experimental visualizations of the flow field. This combined numerical and experimental study, together with critical–point concepts, has been used to uncover the complete sequence of complex transitions between the extreme cases of counter– and co–rotation. The results lead us to speculate that a continuous variation between the two end states may lead to an efficient chaotic advective mixer.
    Original languageEnglish
    Pages (from-to)117-135
    Number of pages19
    JournalProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
    Issue number2029
    Publication statusPublished - 2003


    • Stokes flow
    • Streamline topology
    • Hyperbolic saddle point
    • Mixing


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