New Approach to Hydrodynamic Forces on Oscillating Low Aspect Ratio Wings

Yuasa, Kazuaki; Fujino, Masataka; Motora, Seizo

doi:10.2534/jjasnaoe1968.1977.142_65

J. SNAJ, Nihon zousen gakkai ronbunshu

1977

DOI: 10.2534/jjasnaoe1968.1977.142_65

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New Approach to Hydrodynamic Forces on Oscillating Low Aspect Ratio Wings

Kazuaki Yuasa¹,

Masataka Fujino²,

Seizo Motora³

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1979

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Cited by 4 publications

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Motion response analysis for a Resonance-Free SWATH

一¹,

基樹²,

英嗣³

et al. 2009

J.JASNAOE

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SummaryThe paper describes the computational method for motion responses on a Resonance-Free SWATH (RFS), which has extremely small water-plane area and it leads to the feature close to the resonance-free in the motion responses. Theoretical calculations based on the strip theory are carried out and compared with experimental results in regular head waves. The influence of forward speed on lift due to hydrofoils and lower hulls are large and numerically modeled well. Hydrodynamic interaction between twin hulls is well computed through the introduction of a practical manner.

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Motion response analysis for a Resonance-Free SWATH

一¹,

基樹²,

英嗣³

et al. 2009

J.JASNAOE

View full text Add to dashboard Cite

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An Inviscid Model of Discrete-Vortex Shedding for Two-Dimensional Oscillating Flow around a Flat Plate

Kudo

1979

J. SNAJ, Nihon zousen gakkai ronbunshu

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Application of Slender Body Theory to Rolling Motion of a Moving Ship with Bilge Keels

Umeda¹,

Ikeda

1988

J. SNAJ, Nihon zousen gakkai ronbunshu

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A slender body theory for rolling motion of a moving ship with bilge keels is consistently formulated. Under a linear assumption, this theory is in full consideration of both a free surface and free vortex layers. Consequently the three dimensional boundary value problem turns to two dimensional wave making problems considering free vortex layers that flow from the upper stream. Calculated results are presented for two simple uniform bodies with bilge keels and a coastal fishing boat. Furthermore, a comparison between the theory and experiments for the fishing boat is given. Agreements of the comparison are not satisfactory, because the theory ignores non-linear phenomena and changes of running attitudes. The results show how the linear hydrodynamic components due to the hull and bilge keels contribute to the roll damping moment for the ship.

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New Approach to Hydrodynamic Forces on Oscillating Low Aspect Ratio Wings

Cited by 4 publications

References 3 publications

Motion response analysis for a Resonance-Free SWATH

Motion response analysis for a Resonance-Free SWATH

An Inviscid Model of Discrete-Vortex Shedding for Two-Dimensional Oscillating Flow around a Flat Plate

Application of Slender Body Theory to Rolling Motion of a Moving Ship with Bilge Keels

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