| Project/Area Number |
21246131
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | National Maritime Research Institute |
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Principal Investigator |
TANAKA Yoshiteru 独立行政法人海上技術安全研究所, 構造系, 系長 (40373419)
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| Co-Investigator(Kenkyū-buntansha) |
ANDO Takahiro 海上技術安全研究所, 構造系, 研究員 (30425756)
ANAI Yosuke 海上技術安全研究所, 構造系, 研究員 (60470051)
MURAKAMI Chikahisa 海上技術安全研究所, 構造系, 主任研究員 (90392688)
YAMADA Yasuhira 海上技術安全研究所, 構造系, 主任研究員 (90443241)
WATANABE Naohiko 岐阜工業高等専門学校, 環境都市, 助教 (50550034)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥24,960,000 (Direct Cost: ¥19,200,000、Indirect Cost: ¥5,760,000)
Fiscal Year 2011: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2009: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
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| Keywords | 船舶工学 / スロッシング / 流力弾性応答 / 低減装置 / LNG船 / 縮尺影響 / 相似則 / 有限要素法解析 |
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| Research Abstract |
In order to establish the estimation method of sloshing load in consideration of the hydroelastic effect of tank walls and to develop the new reduction device for sloshing pressure, the experimental study was conducted by using the various types of tank models. As results, it was cleared that the ratio of the average peak pressure showed from 0.7R to 1.3R compared with the scale ratio R of tank models and that the mass of additional water could be estimated by the quarter circle model when the impulsive pressure was applied to tank top plate. In addition, though the reduction effect of sloshing pressure by membrane materials was remarkable for wide filling ratio of inside fluid, it was found that the reaction force at supporting points of ropes got to large in the middle and high filling ratio. Therefore, the reduction device was improved only for low filling ratio and its effectiveness was verified experimentally.
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