Study on the effects of the hydrodynamic characteristics under a mooring system failure for an aquaculture net cage(I)

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Project title

Code/計畫編號

MOST109-2222-E006-003-MY2

Translated Name/計畫中文名

錨碇系統斷纜對箱網養殖結構水動力特性影響之研究(I)

Project Coordinator/計畫主持人

Hung-Jie Tang

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

楊瑞源

Department/Unit

Tainan Hydrotech Laboratory,NCKU

Website

https://www.grb.gov.tw/search/planDetail?id=13397766

Year

2020

Start date/計畫起

01-03-2020

Expected Completion/計畫迄

28-02-2021

Bugetid/研究經費

945千元

ResearchField/研究領域

土木水利工程

雖然海上箱網養殖在過去數十年來發展得相當成功，但錨碇系統斷纜依舊是持續會發生的問題。為進一步了解此一問題，本計畫擬探討在波浪和海流作用下，上游面錨碇系統發生斷纜後所引發的動力特性改變。本計畫初步已透過數值模式模擬錨碇系統斷纜的現象。為驗證數值模擬結果的可靠性，本計畫擬進行一系列水工模型試驗，預計兩年期。第一年先進行純流、規則波與海流作用下的單點錨碇系統斷纜情境。第二年預計進行不規則波和海流作用下單點錨碇系統斷纜情境，最後將進行多點錨碇系統斷纜的情境，深入探討錨碇系統發生連續斷纜的可能機制。 Although aquaculture net cage has been well developed in recent decades, the mooring system failure still remains an ongoing issue. To further understand this problem, a numerical study has been performed as a preliminary study, which is to simulate dynamic changes resulted from one upstream anchor failure of net cages exposed to waves and currents. This project aims to validate the numerical model by a series of experimental tests. It would be a two- years project, in the first year, an upstream anchor failure affected by current-only and wave-current conditions will be carried out; in the second year, the failure under an irregular wave and current will be performed. Finally, the multi-points failure case will also be involved in this study to further understand the mechanism of the Domino effect of mooring system failure.

Keyword(s)

養殖
箱網
錨碇系統斷纜
數值模擬
水工模型試驗
aquaculture
net cage
mooring system failure
numerical model
laboratory experiment

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Study on the effects of the hydrodynamic characteristics under a mooring system failure for an aquaculture net cage(I)

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