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Research Bulletin by RS

Studies of the rudder propellers' interaction with the hull and with each other in the dynamic positioning mode
Authors: O.V. Solyakov, N.A. Kutin, A.S. Efremov, V.V. Magarovsky

 

Abstract

The article presents the results of the research on the interaction of rudder propellers (RP) with the hull and with each other in the dynamic positioning mode. It has been determined that the stop loss of the whole dynamic positioning system varies from 30 to 70% in any location of the RP. Research has been conducted to study the physical effect and interaction of the RPs with the hull and with each other. The results, obtained through this research, show that the drop in thrust can reach 55 % in case of RPs' interaction with each other and 15% in case of the RP's interaction with the hull. Neglecting these physical phenomena leads to the ship's positioning capability overestimation when operating in in difficult conditions, which substantially increases the accident risk and reduces the ship's economic efficiency. It is shown that the interaction of the RPs with the hull and with each other in the dynamic positioning mode must be taken into account when selecting the control means for sea and river facilities and developing the principles of motion control.

Keywords: propeller-steering columns, means of active management, dynamic positioning mode, interaction with the ship's hull, model trials.

 

References

1. Morishita Н.Н., Tannuri Е.А., Saad A.C., Sphaier S.H., Lago G.A., Morateffi Jr.L. Laboratory Facilities for Dynamic Positioning System. In: 8th Conference on Maneuvering and Control of Marine Craft (MCMC 2009). Brazil, 2009.

2. Rampazzo F., Silva J.L.B., Vieira D.R, Pacifico A.L., Morateffi Jr.L., Tannuri EA. Numerical & Experimental tools for offshore DP operations. In: ASME 30th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2011. Rotterdam, the Netherlands, 2011.

3. Lei Wang, Shi-zhi Yang, Liang Wang. Hydrodynamic Interaction Research in the Dynamic Positioning System. Proceedings of the Nineteenth (2009) International Offshore and Polar Engineering Conference. Osaka, Japan, June 21-26, 2009, pp 186 - 190.

4. Brix J.E., Bussemaker O. Lateral Thrusters with Anti-Suction Tunnels. Proceedings of the 1st North American Tug Convention, Ship & Boat International. Vancouver, Canada, 1973.

5. Nienhuis U. Analysis of Thruster Effectivity for Dynamic Positioning and Low Sped Manoeuvring. PhD Thesis. Delft University, Delft, Netherlands, 1992.

6. Gofman A.D. Theory and calculation of inland vessels maneuverability. Leningrad, Sudostroenie Publ., 1971, 256 p. (In Russian)

7. Vasiliev A.V. Upravlyaemost' sudov: uchebnoe posobie [Ships maneuverability: tutorial]. Leningrad, Sudostroenie Publ., 1989,328 p.

 

About authors

Solyakov Oleg - PhD, associate professor, FSEI HE "Admiral Makarov State University of Maritime and Inland Shipping", 5/7, Dvinskaya st., 198035, St. Petersburg, Russia, e-mail: solyakovl@yandex.ru

Kutin Nikolay - FSUE "Krylov State Research Center", 4, Moskovskoe shosse, 196158, St. Petersburg, Russia, e-mail: 9_otd@ksrc.ru

Efremov Aleksander - FSUE "Krylov State Research Center", 4, Moskovskoe shosse, 196158, St. Petersburg, Russia

Magarovsky Vyacheslav - PhD, FSUE "Krylov State Research Center", 4, Moskovskoe shosse, 196158, St. Petersburg, Russia, e-mail: V_Magarovskiy@ksrc.ru

 

Issue: 46/47 (2017)


For citation:  O.V. Solyakov, N.A. Kutin, A.S. Efremov, V.V. Magarovsky. Studies of the rudder propellers' interaction with the hull and with each other in the dynamic positioning mode. Research Bulletin by Russian Maritime Register of Shipping. 2017, No. 46/47, pp. 89-92.


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UDC:  629.123
Pages:  89-92
Article (.pdf):  Download


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