A Study on the Propulsion Performance of KCS in Still Water and Regular Wave

Title & Authors
A Study on the Propulsion Performance of KCS in Still Water and Regular Wave
Lee, Sang-Min; Jeong, Uh-Cheul; Kim, Dae-Hae;

Abstract
Since most merchant vessels are mainly influenced by the added resistance in an actual sea, they could be navigated more efficiently if this added resistance could be precisely predicted and then effectively reduced. In this paper, we have computed the effective horsepower based on the resistance performance in still water and then calculated the added resistance in regular wave in order to estimate a ship`s propulsion performance on a voyage. Firstly, we have performed experiments using a model of KCS in a circulating water channel to estimate the flow characteristics around a container ship and the ship`s resistance in still water. Then we have calculated the motion response function in regular wave as well as the values for the increase in resistance, and evaluated the ship`s motion performance in waves according to the calculated response function. It was found that the resistance in waves increased because the ship`s motion response value became larger as the ship`s speed increased in the case of head sea. The effect of the added resistance could be reduced by maneuvering the ship to the encounter angle of $\small{120^{\circ}}$ in areas of long wavelengths and to head sea in areas of short wavelengths.
Keywords
added resistance;still water;regular wave;motion response function;encounter angle;KCS;
Language
English
Cited by
References
1.
Ahn, B. K. and Lee, S. M.(2010), "Study on the Added Resistance of Barge in Waves", Journal of Navigation and Port Research, Vol. 34, No. 10, pp. 741-746.

2.
Faltinsen, O. M., Minsaas, K. J., N. Liapis and Skjordal, S. O. (1980), "Prediction of Resistance and Propulsion of a Ship on a Seaway", Proceeding of 13th Symposium On Naval Hydrodynamics, pp. 505-529.

3.
Hong, D. C., Hong, S. Y. and Kim, E. C.(2001), "On the Calculation of Added Resistance of a Ship by Maruo's Formula", Proceeding of the Spring Conference of the Korean Society of Ocean Engineers, pp. 202-207.

4.
Kashiwagi, M., Kawasoe, K. and Inada, M.(2000), "A Study on Ship Motion and Added Resistance in Waves", Journal of the Kansai Society of Naval Architects of Japan, No. 234, pp. 85-94.

5.
Maruo, H. and Iwase, K.(1980), "Calculation of Added Resistance in Oblique Waves", Journal of the Society of Naval Architects of Japan, Vol. 147, pp. 79-84.

6.
Naito, S., Nakamura, S. and Nishiguchi, A.(1985), "Added Resistance in Short Length Waves on Ship Forms with Blunt Bow", Journal of the Kansai Society of Naval Architects of Japan, Vol. 197, pp. 39-45.

7.
Nakamura, S., Naito, S., Matsumoto, K., Susukida, K. and Nishiguchi, A.(1983), "Experimental Study on Resistance Increase in Regular Head Waves of a Ship with Blunt Bow", Journal of the Kansai Society of Naval Architects of Japan, Vol. 190, pp. 73-81.

8.
Takagi, K.(1991), "Simplified Formulas for the Calculation of Added Resistance, Steady Lateral Force and Turning Moment in Waves", Journal of the Kansai Society of Naval Architects of Japan, No. 216, pp. 121-128.

9.
Takahashi, T.(1988), "A Practical Prediction Method of Added Resistance of a Ship in Waves and the Direction of its Application to Hull Form Design", Transactions of the West-Japan Society of Naval Architects, No. 75, pp. 75-95.