REGULAR & IRREGULAR WAVES Bulge Wave Technology

REGULAR & IRREGULAR WAVESAndBulge Wave Technology

Mohamed salamaAndMohamed Gamal

Under the supervision of : Dr. Saad Eldeen

Waves on the surface of the ocean with periods of 3 to 25 sec are primarily generated by winds and are a fundamental feature of coastal regions of the world. Other wave motions exist on the ocean including internal waves, tides, and edge waves. In looking at the sea surface, it is typically irregular and three-dimensional (3-D).

The sea surface changes in time, and thus, it is unsteady. At this time, this complex, time-varying 3-D surface cannot be adequately described in its full complexity; neither can the velocities, pressures, and accelerations of the underlying water required for engineering calculations.

REGULAR & IRREGULAR WAVES

The Regular Waves: begins with the simplest mathematical representation assuming ocean waves are two-dimensional (2-D), small in amplitude, and progressively definable by their wave height and period in a given water depth. In this simplest representation of ocean waves, wave motions and displacements, kinematics (that is, wave velocities and accelerations), and dynamics (that is, wave pressures and resulting forces and moments) will be determined for engineering design estimates.

A complete 3-D representation of ocean waves requires considering the sea surface as an irregular wave train with random characteristics.

The Irregular Waves: devoted to an alternative description of ocean waves. Statistical methods for describing the natural time-dependent three-dimensional characteristics of real wave systems are presented.

Bulge Wave Technologyanaconda bulge wave power generator

The Anaconda wave energygenerator is located on the coasts of Great Britain. The device consists of a long rubber tube, closed at both ends and filled with water that is anchored on the bottom of the ocean. Developed by Checkmate Seaenergy Ltd, the prototype is capable of converting wave power into electricity by utilizing bulge waves.The biggest advantage of the Anaconda over another system, like Pelamis, is the fact that it is virtually inexpensive to make because it uses cheap materials and no joints and hinges that may break.

component:The anaconda is rubber tube, 20 ft. width and 600 ft. long (6m & 200 m).The device is tethered to the seabed.Bulge wave & Turbine Generator & cable to land.

How it works????Sealed rubber tube anchored one or two miles off shore, just below sea surface.As front end of tube is lifted by wave, a pulse of water or bulge wave is created inside the tube.As the peak of the wave moves along the outside of the tube, it pushes the bulge wave along the inside.The continuous squeezing of the ocean wave makes the bulge wave bigger and bigger.Bulge wave squeezed into a turbine where it generates up to 1MW of electricity which flows along a cable to land.

Pelamis Wave Anaconda wave