International Journal of Naval Architecture and Ocean Engineering

  • 제13권1호
  • /
  • Pages.278-291
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  • 2021
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  • 2092-6782(pISSN)
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  • 2092-6790(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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Improvement of prediction methods of power increase in regular head waves using calm-water and resistance tests in waves

  • Chun, Ho-Hwan (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Lee, Cheol-Min (Ship & Offshore Performance Research Center, Samsung Heavy Industries) ;
  • Lee, Inwon (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Choi, Jung-Eun (Global Core Research Center for Ships and Offshore Plants, Pusan National University)
  • 투고 : 2020.09.15
  • 심사 : 2021.03.24
  • 발행 : 2021.11.30
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초록

This paper applies load variation method to predict speed-power-rpm relationship along with propulsive performances in regular head waves, and to derive overload factors (ITTC, 2018). 'Calm-water tests' and 'resistance test in waves' are used. The modified overload factors are proposed taking non-linearity into consideration, and applied to the direct powering, and resistance and thrust identity method. These indirect methods are evaluated through comparing the speed-power-rpm relationships with those obtained from the resistance and self-propulsion tests in calm water and in waves. The objective ship is KVLCC2. The load variation method predicts well the speed-power-rpm relationship and propulsion performances in waves. The direct powering method with modified overload factors also predicts well. The resistance and thrust identity method with modified overload factor predicts with a little difference. The direct powering method with overload factors predicts with a relatively larger difference.

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과제정보

This work was supported by a 2-Year Research Grant of Pusan National University.

참고문헌

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