Transforming ellipsoidal motion into translatory motion

Adem Kader - Cagatay Bircan - Ersen Bilgin - Zafer Faydali

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1) INTRODUCTION

The main aim of this project is to transform ellipsoidal wave motion into translatory motion and apply it to the enclosed bays (e.g. The Bay of Marmaris) in order to remove the pollution in these areas. In simpler words, the aim is to transform the natural wave energy into a mass flow by breaking the waves artificially (i.e. introducing a slope to the incoming waves). Then, by directing the flow that is created into a closed bay with the help of a channel, a circulation inside the bay will be created. This circulation would replace the polluted water inside the bay with cleaner sea water.

2) ELLIPSOIDAL AND TRANSLATORY MOTION

2.1) ELLIPSOIDAL MOTION

ellipsoidal motion is a combination of both translatory and transverse motions. It is basically an elliptical motion. The motion of water molecules on the surface of a surface waves (i.e. waves in the lakes, seas…) is an example of ellipsoidal motion. If you have ever watched sea waves moving toward shore (and before they break), you may have wondered if the waves were carrying water from out at sea into the beach. This is fortunately not the case. If they had been actually moving toward the shore, there would be no water left in the middle of the sea. All the water would have been piled up on the shore. The molecules on the surface oscillate back and forth creating an ellipsoidal motion. This is clearly demonstrated by observing leaves on a pond as waves move by (i.e. they never change their position).

2.2) TRANSLATORY MOTION

Translatory motion simply means a net mass flow. After the waves break, the water molecules cannot complete their ellipsoidal paths and thus have a net movement. This movement is called translatory motion.

3) HYPOTHESIS

As a wave approaches shallower water near shore, the water particles begin to interact with the ground and thus slow down. Therefore, the particles have difficulty in completing their ellipsoidal path. At this point, the wave breaks and the motion of the particles becomes translatory. In closed bays, the sea waves cannot affect the still water inside the bay because they are not interacting with the open seas. As a result of this, the pollution created by external factors collects in the bay. If some incoming waves are broken artificially and the created mass flow is directed into the closed bay, a circulation inside the bay will be created. This circulation would allow the polluted water inside the bay to be replaced with cleaner water from outside. This method is a prime use of free and clean technology, because the bay is cleaned by using natural wave energy only.

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