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Investigation of Low-Frequency Pitch Motion Characteristics for KRISO Standard Offshore Structure (KSemi) Moored with a Truncation Mooring System

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dc.contributor.authorPark, Byeongwon-
dc.contributor.authorJung, Sungjun-
dc.contributor.authorSeo, Min-Guk-
dc.contributor.authorKim, Jinha-
dc.contributor.authorSung, Hong Gun-
dc.contributor.authorPark, Jong-Chun-
dc.date.accessioned2023-12-22T10:31:13Z-
dc.date.available2023-12-22T10:31:13Z-
dc.date.issued2023-10-
dc.identifier.issn2077-1312-
dc.identifier.issn2077-1312-
dc.identifier.urihttps://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9747-
dc.description.abstractIn this study, a model test was carried out to evaluate the station-keeping performance of Korea Research Institute of the Ships and Ocean Engineering (KRISO) standard semi-submersible, K-Semi in the Deep Ocean Engineering Basin (DOEB). The test was performed using a 1/50 scaled model with 12 mooring lines. The water depth was set to 3.2 m using a moveable bottom structure and truncated mooring lines. The dynamic behavior of the K-Semi was examined using a free decay test and regular wave as well as irregular wave tests of 1800. Large surge, heave and pitch due to drift motion from second-order effect were observed. The reason for the excessive low-frequency pitch motion is attributed to the restoring force and moment related to the mooring system as excessive surge occurred. The numerical model of K-Semi with the truncated mooring system was tuned and calibrated using model test results such as free decay and regular wave tests. Through numerical analysis, the motion characteristics of the K-Semi were compared with irregular model test results. In the case of a semi-submersible using a mooring system, it is observed that excessive pitch motion due to vertical restoring force and moment may occur when large horizontal displacement occurs. The effect of low-frequency pitch motion related to surge motion is an important factor in upwell estimation as well as second-order motion in referred DNV-GL OTG13.-
dc.language영어-
dc.language.isoENG-
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)-
dc.titleInvestigation of Low-Frequency Pitch Motion Characteristics for KRISO Standard Offshore Structure (KSemi) Moored with a Truncation Mooring System-
dc.typeArticle-
dc.publisher.location스위스-
dc.identifier.doi10.3390/jmse11101842-
dc.identifier.scopusid2-s2.0-85175333824-
dc.identifier.wosid001159299500001-
dc.identifier.bibliographicCitationJournal of Marine Science and Engineering, v.11, no.10, pp 1842-
dc.citation.titleJournal of Marine Science and Engineering-
dc.citation.volume11-
dc.citation.number10-
dc.citation.startPage1842-
dc.type.docTypeArticle-
dc.identifier.urlhttps://www.mdpi.com/2077-1312/11/10/1842#-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.relation.journalResearchAreaEngineering-
dc.relation.journalResearchAreaOceanography-
dc.relation.journalWebOfScienceCategoryEngineering, Marine-
dc.relation.journalWebOfScienceCategoryEngineering, Ocean-
dc.relation.journalWebOfScienceCategoryOceanography-
dc.subject.keywordAuthorlow-frequency motion-
dc.subject.keywordAuthormodel test-
dc.subject.keywordAuthormooring system-
dc.subject.keywordAuthorsemi-submersible-
dc.subject.keywordAuthortruncated mooring-
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친환경해양개발연구본부 (심해공학연구센터)
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