DRAG REDUCTION BY BIOPOLYMER OF MONEPTERUS ALBUS SLIME ON SHIP MODEL WALL
Keywords:
Monepterus albus slime, drag reduction, ship model wall.Abstract
The surface viscous liquid is one of fish’s resistance reduction elements. The fish surface is covered with viscous liquid, which is considered to reduce the resistance. As compared with a solvent, a certain polymer solution of several ppm to several hundred ppm offers substantially reduced turbulent frictional resistance. The relationship between the Tom’s effect and reduction of viscosity resistance is described. The purpose of this research is to study the drag reduction in resistance of ship model wall by monepterus albus slime. The ship model with L = 2.3 m, B = 0.4 and T = 0.15 m pulled by electric motor which speed can be varied. The ship model resistance is measured by load cell dynamometer. The results show the drag reduction is about 8%.References
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