2021 Fiscal Year Final Research Report
Re-construction of Ship Resistance Theory using CFD and Tank Tests
Project/Area Number |
18H01638
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 24020:Marine engineering-related
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Research Institution | Yokohama National University |
Principal Investigator |
Hino Takanori 横浜国立大学, 大学院工学研究院, 教授 (60373429)
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Project Period (FY) |
2018-04-01 – 2022-03-31
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Keywords | 船舶流体力学 / CFD / 船体抵抗 |
Outline of Final Research Achievements |
The objective of the present study is to develop a new method for separating resistance components of a ship based on hydrodynamic principle with the aid of CFD analysis. The developed separation method is applied to the resistance extrapolation from a model scale to a ship scale. The reconstruction of ship Resistance theory is achieved by considering validity of various assumptions to separate the resistance components, such as flat plate friction, form factor for viscous resistance and wave making resistance. CFD methods including a newly developed inviscid flow computation methods are applied for flow analyses and characteristics of each resistance component is extracted. Based on the obtained knowledge, a new procedure for extrapolating resistance of a full scale ship from tank test data of a model ship is proposed.
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Free Research Field |
船舶海洋工学
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Academic Significance and Societal Importance of the Research Achievements |
CFDを援用することで、従来の水槽試験結果による実船の抵抗性能推定における流体力学的不合理性を解消する方法を提案した。これにより、実船の性能推定精度が向上し、近年の地球温暖化対応のCO2排出規制に伴う抵抗低減船型の研究開発における高精度水槽試験のニーズの高まりに対応することが可能となった。
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