Direct numerical simulation of cavitation noise for a 3D circular cylinder cross-flow

Youngmin Bae, Jung H. Seo, Young J. Moon, Byeong Rog Shin

    Research output: Contribution to conferencePaperpeer-review

    Abstract

    In this study, cavitation noise for a circular cylinder cross-flow is directly simulated for Reynolds number based on the cylinder diameter, Re D = 200 and 3900, and cavitation number, σ = 0.7 ∼ 2. The cavitating flow and noise are predicted by the compressible Navier-Stokes equations written for the two-phase fluid, employing a density-based homogeneous equilibrium model with a linearly-combined equation of state. To resolve the linear and non-linear waves in the cavitating flow, a sixth-order compact central scheme is utilized with a selective spatial filtering technique. It is observed that, at sub- and supercritical cavitation numbers, the cavitating flow and noise characteristics are significantly changed by the shock waves due to the collapse of the cloud cavitation in the wake. It is also shown that spanwise flow structures over the cylinder is quite coherent to the strength of monopole shock waves.

    Original languageEnglish
    Pages605-610
    Number of pages6
    Publication statusPublished - 2009
    Event5th International Conference on Computational Fluid Dynamics, ICCFD 2008 - Seoul, Korea, Republic of
    Duration: 2008 Jul 72008 Jul 11

    Other

    Other5th International Conference on Computational Fluid Dynamics, ICCFD 2008
    Country/TerritoryKorea, Republic of
    CitySeoul
    Period08/7/708/7/11

    ASJC Scopus subject areas

    • Fluid Flow and Transfer Processes

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