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 Yanuar,Gunawan,Sunaryo and A. Jamaluddin.Micro-bubble Drag Reduction on a High Speed Vessel Model[J].Journal of Marine Science and Application,2012,(3):301-304.[doi:10.1007/s11804-012-1136-z]
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Micro-bubble Drag Reduction on a High Speed Vessel Model


Micro-bubble Drag Reduction on a High Speed Vessel Model
Yanuar Gunawan Sunaryo and A. Jamaluddin
Yanuar Gunawan Sunaryo and A. Jamaluddin
1. Department of Mechanical Engineering, University of Indonesia, Jakarta 16424, Indonesia 2. Indonesian Hydrodynamic Laboratory, Surabaya 60111, Indonesia
ship model test micro-bubble injection drag reduction high speed vessel model
Ship hull form of the underwater area strongly influences the resistance of the ship. The major factor in ship resistance is skin friction resistance. Bulbous bows, polymer paint, water repellent paint (highly water-repellent wall), air injection, and specific roughness have been used by researchers as an attempt to obtain the resistance reduction and operation efficiency of ships. Micro-bubble injection is a promising technique for lowering frictional resistance. The injected air bubbles are supposed to somehow modify the energy inside the turbulent boundary layer and thereby lower the skin friction. The purpose of this study was to identify the effect of injected micro bubbles on a navy fast patrol boat (FPB) 57 m type model with the following main dimensions: L=2 450 mm, B=400 mm, and T=190 mm. The influence of the location of micro bubble injection and bubble velocity was also investigated. The ship model was pulled by an electric motor whose speed could be varied and adjusted. The ship model resistance was precisely measured by a load cell transducer. Comparison of ship resistance with and without micro-bubble injection was shown on a graph as a function of the drag coefficient and Froude number. It was shown that micro bubble injection behind the mid-ship is the best location to achieve the most effective drag reduction, and the drag reduction caused by the micro-bubbles can reach 6%–9%.


Bertram V (2000). Practical ship hydrodynamics. Butterworth- Heinemann, Linacre House, Jordan Hill, Oxford OX2 8DP, UK, 74.
ITTC (2002). Testing and extrapolation methods in resistance towing tank tests. Recommended Procedures and Guidelines.
Kato H, Miyanaga M, Yamaguchi H (1994). Frictional drag reduction by injecting bubbly water into a turbulent boundary layer and the effect of plate orientation. In:Serizawa A, Fukano T, Bataille J (eds). Advanced in Multiphase Flow. Elsevier, Amsterdam, 86-96.
Kato H, Miura K, Yamaguchi H, Miyanaga M (1998). Experimental study on microbubble ejection method for frictional drag reduction. Journal of Marine Science and Technology, 3(3), 122-129.
Kodama Y, Kakugawa A, Takahashi T, Kawashima H (2000). Experimental study on micro bubbles and their applicability to ships for skin friction reduction. International Journal of Heat and Fluid Flow, 21, 582-588.
Latorre R, Bablenko V (1998). Role of bubble injection technique in drag reduction. Proc. ONR-NUWC International Symposium on Seawater Drag Reduction, Newport, 319-326.
Latorre R, Miller A, Philips R (2003). Microbubble resistance reduction on a model SES catamaran. Journal of Ocean Engineering, 30, 2297-2309.
Madavan NK, Deutsch S, Merkle CL (1985). Measurements of local skin friction in a micro-bubble-modified turbulent boundary layer. Journal of Fluid Mechanic, 156, 237-256.
McCormick ME, Bhattacharyya R (1973). Drag reduction of a submersible hull by electrolysis. Nav Eng Journal, 85, 11-16.
Takahashi T, Kakugawa A, Kodama Y, Makino M (2001). Experimental study on drag reduction by microbubbles using a 50m-long flat splate ship. 2nd Int. Symp. on Turbulence and Shear Flow Phenomena, Stockholm, Sweden, 175-180.
Watanabe O, Masuko A, Shirose Y (1998). Measurements of drag reduction by microbubbles using very long ship models. Journal of Soc. Naval Architects, 183, 53-63.


Supported by the Directorate for Research and Community Service, University of Indonesia (RUUI Research Laboratory 2010), Jakarta, Indonesia.
Last Update: 2012-09-05