Estimation of Wind Forces and Moments acting on Ships

Fujiwara, Toshifumi; Ueno, Michio; Nimura, Tadashi

doi:10.2534/jjasnaoe1968.1998.77

Cited by 94 publications

(28 citation statements)

References 1 publication

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“…Various regression formulae have been published [52][53][54][55][56][57]. Figure 15 [14] shows a comparison of the estimated value and the result of a wind tunnel test to determine the wind resistance coefficient as the standard error ( SE EST ).…”

Section: Prediction Of Wind Resistancementioning

confidence: 99%

Performance prediction of full-scale ship and analysis by means of on-board monitoring (Part 1 ship performance prediction in actual seas)

Tsujimoto

Orihara²

2018

J Mar Sci Technol

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In recent years, it has become important to evaluate whether ship propulsive performance achieves the design performance not only in a calm sea condition but also in a seaway. Various on-board monitoring systems have been developed and fitted on-board to check the performance of ships in a seaway. The evaluation can also be fed back to a new ship design. A method for prediction of ship performance in actual seas based on a physical model is described here. Prediction of steady forces in waves, wind forces, drift forces, and steering forces is described from the viewpoint of accurate practical prediction. The prediction of the engine operating point in winds and waves is also treated here. Examples of these prediction methods are illustrated. Performance analysis by an on-board monitoring system using the performance prediction method discussed here is described in the Part 2 of this paper.

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Section: Prediction Of Wind Resistancementioning

confidence: 99%

Performance prediction of full-scale ship and analysis by means of on-board monitoring (Part 1 ship performance prediction in actual seas)

Tsujimoto

Orihara²

2018

J Mar Sci Technol

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“…Aerodynamic force coefficients C XA , C YA , and C NA were predicted using a method proposed by Fujiwara [17]. Figure 12 shows the coefficients of the target ship versus those of the relative wind direction A .…”

Section: Aerodynamic Force Coefficientsmentioning

confidence: 99%

Effect of Engine Output on Maneuverability of a VLCC in Still Water and Adverse Weather Conditions

Yasukawa

Zaky²,

Yonemasu

et al. 2017

J Mar Sci Technol

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“…The wind forces and moment coefficients are obtained by using Fujiwara's method [5], but a detailed explanation is omitted for the sake of brevity. The second-order steady force due to wave can be estimated by the method [6] which is derived by simplifying Fujii & Takahashi's method [7].…”

Section: Mathematical Modelmentioning

confidence: 99%

Proposal of new-generation route optimization technique for an oceangoing vessel

Ishii

Kobayashi

Mizunoe³

et al. 2010

Oceans'10 Ieee Sydney

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The present paper proposes a new-generation route optimization technique for an oceangoing vessel. Although many studies for route optimization have been conducted, most have implicitly considered ship dynamics. The recent advances of computing performance, however, enable us to calculate ship motion dynamics. In the proposed method, numerical simulation is used to compute the objective function necessary for a route optimization model as a minimum time problem. To examine the robustness of the method, calculation results on a container linear on a trans-Pacific route as a test case are demonstrated. It is concluded that by using a Bézier curve, only a few control variables are needed to generate the optimum route. This technique is now formulated as a minimum time problem, but it could be applicable for various extended problems.

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Estimation of Wind Forces and Moments acting on Ships

Cited by 94 publications

References 1 publication

Performance prediction of full-scale ship and analysis by means of on-board monitoring (Part 1 ship performance prediction in actual seas)

Performance prediction of full-scale ship and analysis by means of on-board monitoring (Part 1 ship performance prediction in actual seas)

Effect of Engine Output on Maneuverability of a VLCC in Still Water and Adverse Weather Conditions

Proposal of new-generation route optimization technique for an oceangoing vessel

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