Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Numerical Prediction of Running Attitude and Resistance of Planing Craft

수치계산에 의한 활주선의 항주 자세 및 저항 추정

  • Oh, Gwangho (Dept. of Ocean Engineering, Mokpo National University) ;
  • Yoo, Jaehoon (Dept. of Ocean Engineering, Mokpo National University)
  • 오광호 (목포대학교 해양시스템공학과) ;
  • 유재훈 (목포대학교 해양시스템공학과)
  • Received : 2012.09.03
  • Accepted : 2013.03.27
  • Published : 2013.04.20
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Abstract

Prediction of the running posture is important to evaluate the resistance by the numerical calculation for a high speed vessel. Especially for a planing craft having a large variation of running attitude it becomes more essential, but it can not be obtained easily because the running posture and the hydrodynamic forces including the resistance are interacted with each other. So iterative calculation to obtain the dynamic forces according to the changes in attitude is necessary, in this study, considering the calculated hydrodynamic force at the assumed draft as the additional buoyancy the corrected draft is calculated through satisfying the equilibrium between the buoyancy and the hull weight. To verify the derived method three kinds of hull forms were used with the results of model tests, R/V ATHENA and 150 tons class guide vessel for middle-speed semi-planing crafts, 28 feet fast boat for a high-speed planing boat. For all cases with several iterations the converged value of draft can be obtained, lastly the resistance and flow around hull were simulated by using VOF method.

Keywords

References

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Cited by

  1. A Study on the Trim and Resistance of Small Catamaran Using Numerical Analysis and a Model Test vol.24, pp.5, 2018, https://doi.org/10.7837/kosomes.2018.24.5.591