Numerical Investigation of Hydrodynamic Behavior of Foil Shaped Zinc Anode for Reducing the Hull Appendages Effect
Appendages are parts of a ship that might increase viscous resistance. The geometric shapes of appendages should be made appropriately in order to generate designs capable of reducing the negative effects of appendages. Therefore, the zinc anodes as sacrificial cathodic protection of ship hull are designed to decrease the amount of drag force that might cause an increase of the total resistance of ship, and it should be installed aligned with the direction of local flow. Regarding the effort to minimize the appendage effect, the foil shaped zinc anode has been proposed in order to improve the performance of drag force on the conventional zinc anode. This research is focused on investigating the hydrodynamic behavior of the foil shaped zinc anode in reducing the effect of hull appendages on ship performance. In this paper, a numerical study has been carried out using the Computational Fluid Dynamics (CFD) method. A comparison of the performance for each variation of foil shaped and conventional zinc anode will be discussed. The results show that foil shaped zinc anodes have generated smaller drag force compared with the conventional ones.
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