首页|Numerical study of air cavity characteristics of bow wave breaking of KCS ship under different speeds

Numerical study of air cavity characteristics of bow wave breaking of KCS ship under different speeds

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Ship bow wave breaking contains complex flow mechanism,which is very important for ship performance.In this study,a practical numerical simulation scheme for bow wave breaking is proposed and the scheme is applied to the simulation of bow wave breaking of KCS ship model with Fr=0.26,0.30,0.35,0.40,analyzing the impact of speed on the bow wave breaking.The results indicate that an increase in speed leads to a significant rise in viscous pressure resistance and more pronounced bow wave breaking.Moreover,it is found that the traditional wave height function in OpenFOAM is not suitable for detailed studies of bow wave breaking.This study extracts different free surfaces through top and bottom views to further analyze the free surface overturning,droplet splashing,and cavity entrainment in bow wave breaking.Additionally,the spatial and temporal distribution of cavities at Fr=0.40 is analyzed,revealing that cavity distribution is closely related to vortex structures and exhibits a periodic pulsation characteristic of approximately 12 s.

Bow wave breakingKRSIO Container Ship(KCS)air cavitydelayed detached eddy simulation(DDES)methodpiecewise line interface calculation-volume of fluid(PL1C-VOF)method

Tian-yi Mao、Feng-jun Bao、Jian-hua Wang、De-cheng Wan、Zhao-jie Wang

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Computational Marine Hydrodynamics Lab(CMHL),School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

Ningbo Pilot Station,Ningbo Dagang Pilotage Co.,Ltd.,Ningbo 315100,China

China Ship Research and Development Academy,Beijing 100191,China

National Natural Science Foundation of ChinaResearch and Application Demonstration Project of Key Technologies for Safeguarding of Container vessels in Ningbo Zhoushan

52131102ZJHG-FW-2024-27

2024

10.1007/s42241-024-0056-0

水动力学研究与进展B辑
中国船舶科学研究中心

水动力学研究与进展B辑

CSTPCDEI
影响因子：0.596
ISSN：1001-6058
年,卷(期)：2024.36(4)
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