NUMERICAL STUDY OF UNSTEADY CAVITATION CHARACTERISTICS AROUND NACA66 HYDROFOIL USING LES MODEL

V. Karthik; J.C. Lee

doi:10.6112/kscfe.2024.29.1.090

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Original Article

NUMERICAL STUDY OF UNSTEADY CAVITATION CHARACTERISTICS AROUND NACA66 HYDROFOIL USING LES MODEL LES 모델을 이용한 NACA66 수중익 주위의 비정상 캐비테이션 특성에 대한 수치해석적 연구

31 March 2024. pp. 90-99

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Abstract

The presence of cavitation in hydraulic machinery leads to vibrations, noise, and a decrease in efficiency. The characteristics of unsteady partial cavitation around NACA66 hydrofoil are numerically investigated. The Schnerr-Sauer cavitation model which is based on two-phase Rayleigh-plesset equation (bubble transport equation) is applied with LES turbulence model. The stable cavitation characteristics affected by cavitation length are studied. In results, the contours of the the vortical structure, boundary layer separation, the re-entrant jet, and the transition from sheet cavitation to cloud cavitation are clearly shown. The numerical results are in good agreement with the experiment.

Keywords

비정상 캐비테이션(Unsteady Cavitation)

LES 모델(LES model)

NACA66 수중익(NACA66 hydrofoil)

Schnerr-Sauer 캐비테이션 모델(Schnerr-Sauer Cavitation model)

References

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Information

Publisher :Korean Society for Computational Fluids Engineering
Publisher(Ko) :한국전산유체공학회
Journal Title :Journal of Computational Fluids Engineering
Journal Title(Ko) :한국전산유체공학회지
Volume : 29
No :1
Pages :90-99
Received Date : 2024-02-14
Revised Date : 2024-02-29
Accepted Date : 2024-03-04
DOI :https://doi.org/10.6112/kscfe.2024.29.1.090

Journal of Computational Fluids Engineering ISSN:1598-6071(Print) 3022-6252(Online) 한국전산유체공학회지

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