시추선 문풀의 내부 유동제어에 의한 부가저항 저감

• Published in: 大韓造船學會 論文集 Vol. 48; no. 6; pp. 544 - 551
• Main Authors: 최시영(Si-Young Choi), 이영길(Young-Gill Lee), 정광열(Kwang-Leol Jeong), 하윤진(Yoon-Jin Ha)
• Format: Journal Article
• Language: Korean
• Published: 대한조선학회 2011
• Subjects: 조선공학; Added resistance(부가저항); Internal flow control(내부유동제어); Model test(모형시험); Moonpool(문풀); Numerical simulation(수치시뮬레이션); Drillship(시추선)
• ISSN: 1225-1143; 2287-7355

The internal flows of moonpool usually causes huge added resistance on drillships, and those are very complex to analyze. Therefore, not only experimental approaches but also numerical simulations are required for better investigations when dealing with the hydrodynamic problems of moonpool. In the present research, numerical simulations are used to find out why the resistance increases by moonpool on a running drillship. That is, the three-dimensional numerical simulations and model tests are carried out to examine the characteristics of internal flow and added resistance by changing the section of the moonpool in both longitudinal and transverse directions. Finally, based on the present studies, an optimized shape of the moonpool is suggested, which effectively reduces added resistance, and that is confirmed with three-dimensional numerical simulations and model tests.