Modeling of hydrodynamic cavitation reactors: a unified approach

V.S. Moholkar, A.B. Pandit

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    66 Citations (Scopus)

    Abstract

    An attempt has been made to present a unified theoretical model for the cavitating flow in a hydrodynamic cavitation reactor using the nonlinear continuum mixture model for two-phase flow as the basis. This model has been used to describe the radial motion of bubble in the cavitating flow in two geometries in hydrodynamic cavitation reactors, viz., a venturi tube and an orifice plate. Simulations of the bubble dynamics in a venturi flow demonstrate the stable oscillatory radial bubble motion due to a linear pressure gradient. Due to an additional pressure gradient due to turbulent velocity fluctuations the radial bubble motion in case of an orifice flow is a combination of both stable and oscillatory type. The results of numerical simulations have been explained on the basis of analogy between hydrodynamic cavitation and acoustic cavitation.
    Original languageUndefined
    Pages (from-to)6295-6302
    JournalChemical engineering science
    Volume56
    Issue number21-22
    DOIs
    Publication statusPublished - 2001

    Keywords

    • Bubble dynamics
    • Acoustic cavitation
    • IR-74419
    • METIS-204879
    • Process Intensification
    • Two phase flow
    • Hydrodynamic cavitation

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