Experimental Study on Shipping Water Volume and its Load on Deck

Ogawa, Yoshitaka; Taguchi, Harukuni; Ishida, Shigemi

doi:10.2534/jjasnaoe1968.1997.182_177

Cited by 19 publications

(18 citation statements)

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“…The term B 0 is the approximate inflow breadth of shipping water (Fig. 2b); [13] proposed this value as 1.1 times the maximum value of F. The proposed extension of Ogawa's formulation consists of a practical way to estimate the shipping flow velocity instead of the ship forward speed V and a method to determine the required F input function. These adjustments are necessary in order to extend the applicability of the described model to a zero-speed case.…”

Section: Modelsmentioning

confidence: 98%

“…In this section, we present the extension made to the analytical formulation proposed by [13] in order to estimate the water height distribution on the deck of a ship without forward speed. The formulation is based on Eq.…”

Section: Modelsmentioning

confidence: 99%

“…This study extends the model described by [13] and [14] so as to estimate the shipping water height distribution on a ship without forward speed. To do so, we propose a practical way to determine some input parameters of the model: the mean shipping flow velocity and the initial water height at the stem.…”

Section: Introductionmentioning

confidence: 99%

“…This model was based on a firstorder approximated solution of the diffusive wave equation, which can represent the propagation of flooding waves in a rectangular channel [9]. Ogawa et al [13] related this flooding wave formulation to the green water event, estimating the shipping water height distribution in a ship with forward speed. The flooding wave model described above well represents decay of water heights in time and space, which cannot be reproduced in the same way by the typical dambreak formulations that assume an infinite initial water volume.…”

Section: Introductionmentioning

confidence: 99%

“…An alternative to the dam-break formulations is the application of flooding wave models, such as the hydraulic model adapted by [13]. This model was based on a firstorder approximated solution of the diffusive wave equation, which can represent the propagation of flooding waves in a rectangular channel [9].…”

Section: Introductionmentioning

confidence: 99%

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An alternative for estimating shipping water height distribution due to green water on a ship without forward speed

Hernández-Fontes

Vitola

Esperança

et al. 2015

Mar Syst Ocean Technol

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The aim of this paper was to present a practical approach for estimating the distribution of water height on the deck of a ship due to a green water event. This distribution can be used to estimate vertical loading on ship and platform decks in the early design phase. The present approach is an extension of the methodology proposed by Ogawa et al. in J Soc Naval Archit Jpn 182:177-185 (1997) for estimating that distribution on a ship with advance speed. In this study, the methodology was adapted for application to a ship without forward speed. The analytical formulation is presented, followed by a parametric study to evaluate the influence of the main input parameters in the results. The results are compared with experimental data from Buchner in Offshore Technology Conference (OTC), vol 7698, Houston, Texas, (1995a) and numerical results from Nielsen in numerical prediction of green water loads on ships, Technical University of Denmark, Lyngby (2003). It is observed that the parameters with the greatest influence on the resultant water height distribution are the initial water height at the stem of the ship and the breadth of the incoming volume of water. A smaller influence is observed for the other input parameters. The results indicate potential for the adapted model to estimate shipping water height distributions due to green water events, at least in early design stages.

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Section: Modelsmentioning

confidence: 98%

Section: Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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