Experimental study on the propulsion performance of a partially submerged propeller

Ha, Jongsik; Park, Jongyeol; GyukPo, Park; Kim, Jaehun; Kim, Jaeheon; Seo, Jeonghwa; Rhee, Shin Hyung

doi:10.1016/j.ijnaoe.2023.100516

Cited by 8 publications

(1 citation statement)

References 14 publications

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“…With the introduction and enforcement of maritime regulations by international and domestic associations, conventions, and major classification societies in recent years, the performance of large aquaculture workboats throughout their lifecycle, including design, construction, and operation, has been significantly impacted. The designers of large aquaculture workboats are increasingly focusing on ship performance design that meets regulatory standards, including ship speed related to energy efficiency guidelines, maneuverability and stability related to minimum safe power guidelines, and ship radiated noise related to underwater radiated noise guidelines [1][2][3][4][5][6]. As the requirements of regulatory standards continue to increase, ship refinement design technology based on sophisticated computational models and experimental evaluation methods becomes more important.…”

Section: Introductionmentioning

confidence: 99%

Influence of Load Conditions on the Propeller Wake Evolution

Yu,

Wang,

Liu

et al. 2023

JMSE

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The present work presents numerical research on the wake flows behind a propeller operating under three advance coefficients. Large eddy simulations are adopted to obtain the viscous flow information behind the propeller. In particular, the study highlights the comparison of the evolution characteristics and the flow physics within the propeller wakes with three advance coefficients. The predicted global force and moment coefficients and phase-average statistics of streamwise velocity agree well with the available experimental data. Compared to all other flow structures in the wake, the tip vortices are found to play the most significant role according to the results. During the pairing process of adjacent tip vortices, the tip vortices diffuse circumferentially, leading to enhanced mutual-induction effects. When the advance coefficient is low, the wake becomes distorted, and the pairing process takes place in the middle region of the flow field. As a result of their unstable motion, the four tip vortices generated by the propeller cannot be distinguished individually in the far field. Instead, they break down into smaller vortices and tend to distribute themselves uniformly in the azimuthal direction. The increase in the advance coefficient delays the pairing process. This study offers valuable insights for the design and optimization of marine propellers.

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