실무책임 : 구가람 박사과정

Main figure : Tip vortex cavitation flow field

Simulation domain and grid strategy

Tip vortex cavitation flow field

Identification of vortex core trajectory and the domain for vortex modelling

Regeneration of vortex structure using vortex modelling

The nuclei distribution in flow field

Tip vortex cavitation flow field based on the bubble dynamics

Variation of cavitation bubble radius and bubble noise results

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

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

• Garam Ku, Cheolung Cheong, Hanshin Seol, "Numerical investigation of tip-vortex cavitation inception and noise of underwater propellers of submarine using sequential Eulerian-Lagrangian approaches", Applied Sciences, 10(23), 8721, 2020