[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.2478/IJNAOE-2013-0225

An estimation method of full scale performance for pulling type podded propellers

Park, Hyoung-Gil (Samsung Ship Model Basin (SSMB), Samsung Heavy Industries Co., Ltd.)
Choi, Jung-Kyu (Department of Naval Architecture and Ocean Engineering, Chungnam National University (CNU))
Kim, Hyoung-Tae (Department of Naval Architecture and Ocean Engineering, Chungnam National University (CNU))

Publication Information

International Journal of Naval Architecture and Ocean Engineering / v.6, no.4, 2014 , pp. 965-980 More about this Journal

Abstract

This paper presents a new estimation method of full scale propulsive performance for the pulling type podded propeller. In order to estimate the drag of pod housing, a drag velocity ratio, which includes the effects of podded propeller loading and Reynolds number, is presented and evaluated through the comparison of model test and numerical analysis. By separating the thrust of propeller blade and the drag of pod housing, extrapolation method of pod housing drag to full scale is deduced, and correction method of propeller blade thrust and torque to full scale is presented. This study utilized the drag coefficient ratio of the pod housing as a measure for expanding it to full scale, but in order to increase the accuracy of performance evaluation, additional study is necessary on the method for the full scale expansion via separating the drag of pod body, strut and fin which consist the pod housing.

Keywords

Pod propeller; Pod housing; Full scale; Drag velocity ratio; Drag coefficient ratio;

Citations & Related Records

Reference

1	Chicherine, I.A., Lobatchev, M.P., Pustoshny, A.V. and Sanchez-Caja, A., 2004. On a propulsion prediction procedure for ships with podded propulsors using RANS-Code analysis. Proceedings of Fist International Conference on Technological Advances in Podded Propulsion, University of Newcastle, UK, 14-16 April 2004, pp.223-236.
2	Holtrop, J., 2001. Extrapolation of propulsion tests for ships with appendages and complex propulsors. Marine Technology, 38 (3), pp.145-157.
3	ITTC, 1999. The specialist committee on unconventional propulsors, final report and recommendations to the 22nd ITTC. Proceedings of the 22nd ITTC, Seoul-Shanghai, Korea-China, 5-8, September, 1999, pp.311-344.
4	ITTC, 2005. The specialist committee on azimthing podded propulsion : final report and recommendations to the 24th ITTC. Proceedings of 24th ITTC, Edinburgh, UK, 2-10, September, 2005, Vol. II, pp.543-600.
5	Lobatchev, M.P. and Chicherine, I.A., 2001. The fullscale resistance estimation for podded propulsion system by RANS method. Lavrentiev Lectures, Proceeding of International Symposium on Ship Propulsion, St. Petersburg, Russia, 19- 21 June 2001, pp.39-44.
6	Sanchez-Caja, A., Ory, E., Salminen, E., Pylkkanen, J. and Siikonen, T., 2003. Simulation of incompressible viscous flow around a tractor thruster in model and full scale. The 8th International Conference on Numerical Ship Hydrodynamics, 22-25 September, Busan, Korea, pp.1-11.