We report experiments involving a technique which provides a means of studying liquid jets which are formed by the collapse of a gas bubble under cavitation-generated shockwaves. The results obtained for such jets formed from a multigrade oil establish that the liquid experiences a significant degree of extensional deformation, at high rates of extension. The results support the conclusion that the reduced velocity and final length of such jets, relative to their Newtonian counterparts, is due to an increased resistance to extensional flow. Insofar as the multigrade oils studied here are made viscoelastic by polymer additives and evidently possess significant levels of resistance to extension, the results provide clear evidence in support of the ‘mitigating effect’ of viscoelasticity on a cavitation damage mechanism mooted by Berker et al (1995).


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    Titel :

    Extensional Flow of Liquid Jets Formed by Bubble Collapse in Cavitating Motor Oils


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Barrow, M. S. (Autor:in) / Williams, P. R. (Autor:in) / Brown, S. W. J. (Autor:in)

    Kongress:

    SAE Powertrain & Fluid Systems Conference & Exhibition ; 2002



    Erscheinungsdatum :

    21.10.2002




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Extensional flow of liquid jets formed by bubble collapse in cavitating motor oils

    Williams,P.R. / Barrow,M.S. / Brown,S.W. et al. | Kraftfahrwesen | 2002


    Effects of Cavitation on the Breakup of Liquid Jets: Bubble Growth, Distortion, and Collapse in an Orifice Flow

    Dabiri, S. / Sirignano, W. / Joseph, D. et al. | British Library Conference Proceedings | 2009



    Underexpanded jets of liquid-gas bubble mixtures

    GOSSELIN, A. / KRANC, S. C. | AIAA | 1971


    Hull cleaning systems using CAVIJET cavitating fluid jets: A feasibility study

    Conn, A.F. / Liu, H.L. / Frederick, G.S. et al. | Tema Archiv | 1979