Model and full scale CFD analysis of propeller boss cap fins (PBCF)

Kawamura, Takafumi; Ouchi, Kazuo; Nojiri, Takeo

doi:10.1007/s00773-012-0181-2

Cited by 41 publications

(20 citation statements)

References 8 publications

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“…The revolution speed difference increased in the full scale, indicating that PSS was more effective for the full scale ship. Kawamura et al (2012) showed better efficacy of PBCF in the full scale than that in the model scale. The influence of PSS was greater because the boundary layer thickness nondimensionalized by L PP (δ/L PP ) was smaller in high Reynolds number.…”

Section: Model Scalementioning

confidence: 81%

“…Hansen et al (2011) evaluated the efficiency of propeller boss cap fin (PBCF) in the model and sea trial tests. Kawamura et al (2012) investigated the influence of the Reynolds number and inflow condition on PBCF performance using CFD. Lee et al (2013) evaluated the propulsion performance under calm water and seaway conditions for energy saving rudder fin using CFD by the concept of energyloss analyses.…”

Section: Introductionmentioning

confidence: 99%

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Full scale wake prediction of an energy saving device by using computational fluid dynamics

Park

Oh²,

Rhee

et al. 2015

Ocean Engineering

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Section: Model Scalementioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Full scale wake prediction of an energy saving device by using computational fluid dynamics

Park

Oh²,

Rhee

et al. 2015

Ocean Engineering

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“…있다 (Kawamura, et al, 2012;Xiong, et al, 2013). 본 논문은 Kim, et al (2015) (Ouchi, et al, 1989) 본 수치해석에 사용된 대상 KP839 프로펠러와 PHVC의 유체 성능은 KRISO LCT 모형시험을 통해 먼저 분석된 바 있으며 프 로펠러의 캡에 PHVC 부착 유무에 따른 각 형상들을 Fig.…”

Section: 실해역 시운전 이전에 모형시험을 통하여 성능을 검증한다 최근 에는 설계단계에서 설계변수 변화에 따른 성능 unclassified

CFD Analysis of Marine Propeller-Hub Vortex Control Device Interaction

Park¹,

Kim²,

Suh³

et al. 2016

Journal of the Society of Naval Architects of Korea

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“…Many additional devices have been designed to improve the hydrodynamic performance and to reduce cavitation and noise. A lot of research has been done on the working mechanisms and effectiveness of these devices [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effects of a fan-shaped Mewis duct before a propeller on propulsion performance

et al. 2018

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To define the guidelines for the design of a Mewis duct for a small bulk cargo ship, a numerical study was carried out to investigate the effects of a fan-shaped Mewis duct on propeller performance of a 38,000 t bulk cargo ship with a three-blade propeller. Calculations were performed using the STAR-CCM+ software based on the solution of the Reynolds averaged Navier-Stokes (RANS) equation. Computations were carried out for a wide range of locations from 0.11D to 0.21D upstream from the propeller disc, a radius of trailing edge from 0.65R to 1.05R, and angle of attack of the inner fins, where from 0° to 10° of the fan-shaped Mewis duct, where D is the diameter of the propeller and R is the radius of the propeller. With the installation of the duct, the axial mean wake fraction on the propeller disc decreased, while the tangential mean wake fraction increased significantly. As the installation position was far away from the propeller, the axial mean wake fraction varied in a wave pattern, while the tangential mean wake fraction increased. With the increase of the radius and the angle of attack of the inner fins of the duct, the axial mean wake fraction first decreased and then increased, while the tangential mean wake fraction increased gradually. Correspondingly, the propeller force coefficients and efficiencies with the duct were all more than those without the duct and changed with the variations of the duct parameters. When the propeller and duct were taken as a propulsion system, the efficiency of the system was less than that of only the propeller. At the same time, with variations of the location, radius, and angle of attack of the inner fins of the duct, the efficiency of the system first increased and then decreased gradually, which indicates that there was an optimum design value for all of the duct parameters. Moreover, only when the design of these duct parameters are reasonable can energy savings be achieved; otherwise, the opposite effect is produced. Eventually, with the installation of the fan-shaped Mewis duct, the wake harmonic degree on the propeller disc can be significantly improved.

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Model and full scale CFD analysis of propeller boss cap fins (PBCF)

Cited by 41 publications

References 8 publications

Full scale wake prediction of an energy saving device by using computational fluid dynamics

Full scale wake prediction of an energy saving device by using computational fluid dynamics

CFD Analysis of Marine Propeller-Hub Vortex Control Device Interaction

Investigation of the effects of a fan-shaped Mewis duct before a propeller on propulsion performance

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