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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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
Title of host publicationComputational Fluid Dynamics 2008
Publisherspringer berlin
Pages605-610
Number of pages6
Publication statusPublished - 2009 Jan 1
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
CountryKorea, Republic of
CitySeoul
Period08/7/708/7/11

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ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Bae, Y., Seo, J. H., Moon, Y. J., & Shin, B. R. (2009). Direct numerical simulation of cavitation noise for a 3D circular cylinder cross-flow. In Computational Fluid Dynamics 2008 (pp. 605-610). springer berlin.