Browse > Article
http://dx.doi.org/10.3744/SNAK.2013.50.5.291

A Study on the Estimation of the Form Factor of Full-Scale Ship by the Experimental Data of Geosim Models  

Ha, Yoon-Jin (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University)
Lee, Young-Gill (Dept. of Naval Architecture and Ocean Engineering, Inha University)
Kang, Bong Han (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.50, no.5, 2013 , pp. 291-297 More about this Journal
Abstract
Generally, form factor is determined through ITTC method. Determining the form factor from ITTC method includes the assumption that the form factor of a full-scale ship is the same value as its model ship. In other words, the form factor is independent on Reynolds number. However, for the more appropriate prediction of the resistance performance of a full-scale ship, the form factor must be determined with the consideration of the variation attendant on Reynolds number. In this research, several Geosim ship models are adopted to investigate the scale effect, and correlation lines of form factor are improved to suggest the better extrapolation method for the prediction of the form factor of full-scale ship. The corrected form factors using the correlation lines are compared with those determined from the results of low-speed resistance tests. To consider the influence of hull form, the correlation lines are determined for the group of high-speed ships and the group of low-speed ships, respectively. The corrected form factors have shown good agreement among the prediction results from each Geosim ship model to the full-scale ship.
Keywords
Form factor; Geosim model test; Scale effect; Resistance coefficient;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Choi, J.E. Kim, J.H. & Lee, H.G., 2011. Computational Study of the Scale Effect on Resistance and Propulsion Performance of VLCC. Journal of the Society of Naval Architects of Korea, 48(3), pp.222-232.   과학기술학회마을   DOI   ScienceOn
2 Garcia-Gomez, A., 2000. On the Form Factor Scale Effect. Ocean Engineering, 27(1), pp.97-109.   DOI   ScienceOn
3 Kim, J. et al., 2011. Development of a Numerical Method for the Evaluation of Ship Resistance and Self-Propulsion Performances. Journal of the Society of Naval Architects of Korea, 48(2), pp.147-157.   과학기술학회마을   DOI   ScienceOn
4 Min, K.S. & Kang, S.H., 2010. Study on the Form Factor and Full-scale Ship Resistance Prediction Method. Journal of Marine Science and Technology, 15(2), pp.108-118.   DOI
5 Prohaska, C.W., 1996. A simple method for evaluation of form factor and low speed wave resistance. Proceedings of 11th ITTC, pp.65-66.