# Bernoulli's Principles Of Fluid Flow

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The Bernoulli’s principle of fluid flow:
It states that for an inviscid flow of a non-conducting fluid, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potentia energy. The principle is named after Daniel Bernoulli who published it in his book Hydrodynamica in 1738.
The Bernoulli’s principle is based on the law of conservation of energy. According to the principle, in a steady flow, the sum of all energies in a fluid streamline remains constant along the entirety of the streamline. This is because the pipe in which the flow takes place will have a constant energy per unit volume throughout at all points.
The sum of energies will incorporate the kinetic and the potential head
The above ships are concrete examples of how extensive the research program is in this area.

Introduction to Flettner Rotor:
Flettner Rotors are spinning cylinders, which produce fluid dynamic lift using the Magnus Effect. The Magnus force can be many times greater in magnitude than the wing lifting force, given the same projected area and dynamic air pressure. It was invented by a German scientist Anton Flettner as a practical application of Magnus Effect even before the invention of diesel engines. The Flettner rotors were beaten by the fact that diesel engines didn’t occupy deck space and also the top-speeds achieved by usage of diesel engines reduced the shipping time.

(The above pictures show the geometry of Flettner Rotors):
The Flettner rotors are high solid hollow cylinders whose surface can either be smooth or rough depending upon the surface friction factor required by the user. The cylinders are mounted on top of motors which rotate the cylinder the cylinder on an axis to incorporate the Magnus Effect.
Initially the Flettner rotors were made of one diameter but later the use of Thom Disks at the ends have been proved to increase the efficiency of the