Numerical investigation of oscillations in nonequilibrium two-phase flows with a model for homogeneous nucleation in Laval nozzles is presented. The model, implemented within an Eulerian–Eulerian reference frame, is formulated using classical nucleation theory. Results by two-dimensional and three-dimensional methods are presented and compared, showing the accuracy of the predicted frequency and the pressure amplitude by a two-dimensional method. Emphasis is placed on oscillating flows in a variety of nozzle geometries, covering a range of inlet conditions. Dependences of frequency on inlet stagnation subcooling demonstrate that the occurrence of the asymmetric mode for pure steam flow is not exclusive to a specific nozzle geometry and inlet condition, which could be deferred by increasing the expansion rate and decreasing the inlet pressure.


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    Titel :

    Numerical Investigation of Oscillating Flows with Nonequilibrium Condensation in Nozzles


    Beteiligte:
    Yu, Xinggang (Autor:in) / Xie, Danmei (Autor:in) / Wang, Cong (Autor:in) / Wang, Chun (Autor:in) / Zhou, Yan (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2015-01-09


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch