Analysis of the Bulbous Bow on Simple Ships

Yim, B.

doi:10.21236/ad0288118

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…The humps and hollows of the curve of the wave resistance due to a ship without a bulb may be applied to that for the ship with the bulb without any considerable error. The bulb has an effect of smoothing out the humps and hollows of the resistance curve to a considerable extent (Yim 1962) in the vicinity of the designed speed or for larger speeds. Pien (1962) seems to have obtained this effect using the principle of wave cancellation by distributed singularities rather than concentrated ones.…”

Section: Discussionmentioning

confidence: 99%

Ship motions and drag reduction / [J.K. Lunde, Stanley W. Doroff, editors.]

Doroff¹,

Lunde²

1966

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Since the Symposium on the Behavior of Ships in a Seaway (Wageningen, 1957), many papers have been published on the theory of ship motions.The present paper is a survey, collation, and evaluation of those contributions which have led toward a rational theory for predicting ship motions.During this period, evidence has accumulated which demonstrates the validity of the superposition principle for ship motions in a seaway. This concept was stated as hypothesis eleven years ago by St. Denis and Pierson (and also sixty years ago by R. E. Froude); its validity may now be considered as proven, beyond the fondest hopes of earlier investigators.With this principle established, attention once again returns to the prediction of motions in small-amplitude regular waves. The best practical approach to making ship motions predictions is probably still through use of strip theory. However, the two-dimensions assumptions 'A more precise definition is that p[aj

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Section: Discussionmentioning

confidence: 99%

Ship motions and drag reduction / [J.K. Lunde, Stanley W. Doroff, editors.]

Doroff¹,

Lunde²

1966

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“…Therefore the design Froude number of the ship would normally be selected so that it falls at a hollow on the resistance curve. However, since the optimum bulb at the bow or the stern for each Froude number has the effect of smoothing out the resistance curve to a great extent (Yim, 1962a) the unfavorable effect of not falling on a hollow is usually outweighted by the advantage of using an optimum bulb.…”

Section: Ship With Fore and Aft Symmetrymentioning

confidence: 99%

International Seminar on Theoretical Waveresistance, University of Michigan, Ann Arbor, Michigan, August 19-23, 1963. Volume Iii

Michelsen¹

1964

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Analysis of the Bulbous Bow on Simple Ships

Cited by 2 publications

References 2 publications

Ship motions and drag reduction / [J.K. Lunde, Stanley W. Doroff, editors.]

Ship motions and drag reduction / [J.K. Lunde, Stanley W. Doroff, editors.]

International Seminar on Theoretical Waveresistance, University of Michigan, Ann Arbor, Michigan, August 19-23, 1963. Volume Iii

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