Abstract No.F171128-022
Author name(s): Sudhir Sindagi1, R Vijayakumar1, B. K. Saxena2
Company: 1. Indian Institute of Technology, India; 2. Tolani Maritime Institute, India
For slow moving vessels, the frictional resistance accounts for as much as 80% of the total resistance, demanding for the reduction in it. The use of air as lubricant, known as ALS, to reduce the friction is an active research topic. In this study, experimental investigations into frictional drag reduction by micro-bubbles were carried out on a scaled model of Bulk Carrier for different ship speeds and injection flow rates. From the study, it is concluded that, for the cruising speed, the maximum reduction in the total drag of 24.8% was obtained at the injection flow rate of 2.5CFM.
KEY WORDS: frictional drag; air lubrication system; ALS; advanced ship technology; green technology; hydrodynamics & CFD
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