Measured and calculated ship wave height and wave period of displacement vessel versus ship speed in the constant distance from the sailing line.
Fig 8
Time series of calculated and measured ship waves by displacement vessel.
5. CONCLUDING REMARKS
The ship waves by actual relatively small vessels were measured and those results were compared with calculated ones by two kinds of simplified estimation method. Comparing the calculated results of ship waves with the experimental ones, they shows good agreement in the maximum wave heights and wave periods except for the wave periods of high speed vessel. In the first step of the research of ship waves by a small vessel, we could obtain the characteristics and the useful estimation method of ship waves generated by a small vessel.
This research was supported by a Grant-in-Aid for Scientific Research from The Japanese Institute of Technology on Fishing Ports and Communities.
REFERENCES
I) Kan M., "Two Dimensional Wave-Making Theory, Three Dimensional Wave-Making Theory", Second Symposium on Ship Motion Theory, pp.17-40, 1977 (Japanese).
2) Ogiwara S., "Numerical Solution for Steady Ship Waves by Means of Rankine Sources", Open Forum on Numerical Ship Hydrodynamics, pp.66-80, 1987 (Japanese).
3) Kurata K. and Oda K, "Ship Waves Shallow Water and Their Effects on Moored Small Vessel, Coastal Engineering, p.3258-3273 1984
4) Sorensen R. M., " Ship-Generated Waves", Advances in Hydroscience, Edited by Van Te Chow, Vol.9, pp.49-83, 1973.
5) Shiotani S. and Kodama Y., "Numerical Simulation of Viscous Flow with Free-Surface around a Ship Model, International Conference on Computational Engineering Science, pp.838-843, 1995.
6) Dawson C. W.,"A practical computer method for solving ship-wave problems, Proc. Second Int. Conf. on Numerical Ship Hydrodynamics, Berkeley, pp.30-38, 1977.
7) Ship Wave Committee, ゛Investigation into the Fundamental Problems on Safety at Traffic Sea Ares (Final Report), Study on Influences of Ship Waves on Small Ships, The Japan Association for Preventing marine Accidents, p.83, 1976 (in Japanese).
