[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.1016/j.ijnaoe.2021.03.005

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)

Publication Information

International Journal of Naval Architecture and Ocean Engineering / v.13, no.1, 2021 , pp. 278-291 More about this Journal

Abstract

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.

Keywords

Power increase; Propulsive performances; Modified overload factors; Indirect prediction methods; Regular head waves;

Citations & Related Records

Times Cited By KSCI : 1 (Citation Analysis)

Reference
Cited By KSCI

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