Research
Research Topic


Multi-phase Flow Noise Tip vortex cavitation and cavitation noise prediction using hybrid method [NACA16-020 Wing]

실무책임 : 구가람 박사과정

Main figure : Cavitation flow field based on the bubble dynamics for cavitation inception prediction

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RANS simulation and Vortex modelling results : vortex structure and vortex generation

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Nuclei distribution in vortex generated flow field

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Bubble dynamics and cavitation noise results : Cavitation bubble behavior and bubble noise spectrum

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Cavitation bubble flow field and noise spectrum at various cavitation number conditions

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Cavitation inception prediction using 1/3-octave band spectrum

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The effect of water quality (Variation of the number of nuclei)

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연구목적

  • 수중 프로펠러의 Cavitation Inception Speed(CIS) 및 광대역 소음 실선 확장기법 연구

연구내용

  • Eulerian-Lagrangian one-way coupling method 개발
  • Reynolds-Averaged Navier-Stokes (RANS)
  • Vortex modelling
  • Bubble dynamics
  • Bubble noise model (Monopole source approximation)

지원기관 및 공동연구기관

  • 선박해양플랜트연구소(KRISO)

관련 발표논문

  • 구가람, 유서윤, 정철웅, "사중극자 보정 Ffowcs Williams and Hawkings 방정식을 이용한 수중익형 공동 유동소음에 대한 수치적 고찰", 한국음향학회지 제37권 제5호, pp.263-270, 2018.07.
  • 구가람, 정철웅, 설한신, 이건철, 한승진, "기포동역학을 이용한 NACA16-020 날개 끝 와류 공동 소음과 공동 초생속도에 대한 수치적 연구", 추계음향학회, 강릉 세인트존스호텔, 2018.11.01.-02.
  • Garam Ku, Cheolung Cheong, Hanshin Seol, "Numerical investigation of tip-vortex cavitation noise of an elliptic wing using coupled Eulerian-Lagrangian approaches", Applied Sciences, 10(17), 5897, 2020
[이 게시물은 최고관리자님에 의해 2021-08-23 17:13:31 Research Topic에서 복사 됨]