전산유체역학을 이용한 2.99톤 어선의 부가물 부착에 따른 횡동요 성능 연구 A study of roll performance for 2.99 ton class fishing boat with appendages using computational fluid dynamics원문보기
국내 어선들은 성능을 향상시키기 위해 구상선수 개조, 빌지킬 부착 등의 다양한 개조를 하고 있다. 하지만 이런 개조 작업들은 대상 선박에 대한 정확한 성능분석 없이 경험에 의존하여 작업이 진행되고 있다. 따라서 본 연구에서는 어선의 횡동요 성능 향상을 위해 부착되고 있는 부가물인 빌지킬, 부력통, 선저킬의 성능에 대한 연구로 2.99톤급 어선에 대하여 수치 시뮬레이션을 수행하여 그 영향을 평가하였다. 부가물의 조합에 따른 성능 해석을 위해 8가지 경우를 고려하였으며, 수치해석은 상용 점성 유동 프로그램인 Star-CCM+가 이용되었다. 수치 해석 결과, 빌지킬은 횡동요 감쇠에 가장 효과적이며, 부력통은 횡동요 주기를 증가시키는데 효과적이다.
국내 어선들은 성능을 향상시키기 위해 구상선수 개조, 빌지킬 부착 등의 다양한 개조를 하고 있다. 하지만 이런 개조 작업들은 대상 선박에 대한 정확한 성능분석 없이 경험에 의존하여 작업이 진행되고 있다. 따라서 본 연구에서는 어선의 횡동요 성능 향상을 위해 부착되고 있는 부가물인 빌지킬, 부력통, 선저킬의 성능에 대한 연구로 2.99톤급 어선에 대하여 수치 시뮬레이션을 수행하여 그 영향을 평가하였다. 부가물의 조합에 따른 성능 해석을 위해 8가지 경우를 고려하였으며, 수치해석은 상용 점성 유동 프로그램인 Star-CCM+가 이용되었다. 수치 해석 결과, 빌지킬은 횡동요 감쇠에 가장 효과적이며, 부력통은 횡동요 주기를 증가시키는데 효과적이다.
The domestic fishing boasts are undergoing various retrofit such as bulb and bilge keel in order to improve performance. However, these retrofitting works are relying on experience, without analyzing the exact performance of target ships. In this paper, Numerical simulation was performed to evaluate...
The domestic fishing boasts are undergoing various retrofit such as bulb and bilge keel in order to improve performance. However, these retrofitting works are relying on experience, without analyzing the exact performance of target ships. In this paper, Numerical simulation was performed to evaluate the performance of bilge keel, buoyant box, bottom keel which are attached on 2.99 ton class fishing boat. 8 conditions are considered for performance analysis according to combination of appendage and they were performed using the commercial software Star-CCM+. In the simulation results, bilge keel is effective appendage to reducing the peak value of roll damping and buoyant box is effective appendage to increasing roll period.
The domestic fishing boasts are undergoing various retrofit such as bulb and bilge keel in order to improve performance. However, these retrofitting works are relying on experience, without analyzing the exact performance of target ships. In this paper, Numerical simulation was performed to evaluate the performance of bilge keel, buoyant box, bottom keel which are attached on 2.99 ton class fishing boat. 8 conditions are considered for performance analysis according to combination of appendage and they were performed using the commercial software Star-CCM+. In the simulation results, bilge keel is effective appendage to reducing the peak value of roll damping and buoyant box is effective appendage to increasing roll period.
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