Journal of Wind Energy (풍력에너지저널)

Korea Wind Energy Association (한국풍력에너지학회)
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Drag Anchor Performance Experiment and Numerical Analysis for Coexistence Fishery Facility in Offshore Wind Farm

해상풍력단지 내 공존어업설비 호미닻 성능 검증 실험 및 수치 해석 연구

  • Su-Yeol Ok ;
  • Kyu-Won Kim ;
  • Chan Joo Kim ;
  • Jong-Hwa Won ;
  • Ho-Yeop Lee ;
  • Doo-Hyun Kyung
  • 옥수열 (주식회사 포어시스, 사업운영실) ;
  • 김규원 (주식회사 포어시스, 기술개발실) ;
  • 김찬주 (인하대학교, 조선해양공학과) ;
  • 원종하 (주식회사 포어시스, 사업운영실) ;
  • 이호엽 (한국전력공사, 전력연구원) ;
  • 경두현 (한국전력공사, 전력연구원)
  • Received : 2022.11.11
  • Accepted : 2023.02.28
  • Published : 2023.03.31
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Abstract

This paper investigates the resistance performance of drag anchors used for aqua farms installed in southwestern offshore wind farms in Korea. These anchors have been employed for a long time without any quantitative evaluation. Experimental campaigns were performed at the target site and the results were used to validate the numerical model by changing the penetration depths in the uniformly distributed seabed (i.e., flat). Based on the validated model with good agreement with the experiments (ARE 1.8 %), the resistance of the anchor with different pullout angles was thoroughly examined. It is worth noting that the Coupled Eulerian-Lagrangian (CEL) technique was applied to account for the large deformation of the anchor; Eulerian for the seabed and Lagrangian for the structure. The numerical results indicated that the pullout resistance is vulnerable to horizontal inclined force rather than vertical inclination, implying that the optimum performance is ideally expected to be 0-degree force applied.

Keywords

Acknowledgement

본 연구는 2022년도 산업통상자원부의 재원으로 한국에너지기술평가원의 신재생에너지핵심기술개발사업의 지원을 받아 수행한 연구 과제입니다. (과제번호 : 20203040020130).

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