Frictional resistance is the net fore-and-aft forces upon the ship due to tangential fluid forces.
As the ship move through the water, friction between hull and the water causes a belt of eddying water adjacent to the hull to be drawn along with the ship, although at a reduced speed. The belt move aft and new particles of water are continually set in motion, the force required to produce this motion being provided by the ship.
The frictional resistance depends upon
i. The speed of the ship
ii. The wetted surface area
iii. The length of the ship
iv. The roughness of the hull
v. The density of water
To reduce frictional resistance we need to reduce any of the above parameters.
The frictional resistance depends upon
i. The speed of the ship
ii. The wetted surface area
iii. The length of the ship
iv. The roughness of the hull
v. The density of water
To reduce frictional resistance we need to reduce any of the above parameters.
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