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CFD Analysis of Cavitation Erosion Potential in Hydraulic Machinery

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F09%3A00330840" target="_blank" >RIV/61388998:_____/09:00330840 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    CFD Analysis of Cavitation Erosion Potential in Hydraulic Machinery

  • Original language description

    The paper describes a new model for efficient modeling of water cavitation erosion potential in turbulent cavitating flow. The number and size of the cavitation nuclei in the inlet flow are predicted empirically or experimentally using the acoustic spectrometer. The bubble dynamics is described using the Rayleigh-Plesset equation along the flow streamlines obtained from the 3D RANS equations. The model of the erosion potential is based on the estimation of the energy dissipated by the collapses of the cavitating bubbles. The paper also describes the experiment carried out in the cavitation tunnel in the SIGMA R&D Institute. The CFD model is tested for 2D and 3D geometry. It is shown that the erosion potential of the first collapses is several orders higher than the potential of the subsequent collapses. The numerically determined location and magnitude of the first collapses are compared with the photographs of the erosion pattern. The agreement for the tested cases is very good.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    BK - Liquid mechanics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA101%2F07%2F1612" target="_blank" >GA101/07/1612: The effect of physical properties of water on bubble nucleation and cavitation damage in pumps</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2009

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Proceedings of the 3rd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems

  • ISBN

    978-80-214-3947-4

  • ISSN

  • e-ISSN

  • Number of pages

    10

  • Pages from-to

  • Publisher name

    University of Technology

  • Place of publication

    Brno

  • Event location

    Brno

  • Event date

    Oct 14, 2009

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article