2526 results about "Sea waves" patented technology

A power-generating device located in or on the surface of the ocean for generating power utilizing the energy in ocean wave motion. The device is moored to the bow and stern at ˜45° to incoming ocean waves, and with a yawing capability to adjust to change in wave direction. The device delivers power to a shore grid via a submarine cable from a generator. A rotational driving torque to the generator is produced by two long counter-rotating drive tubes, which are held by bearings in the bow hull and the stern hull of the device. As an alternative, hydraulics may be employed for energy capture and power smoothing and used to provide the rotational torque through a hydraulic motor to drive a generator. The main body is partially submerged and has multiple pod floats connected to the structure by rocker arms with bearings through which the drive tubes pass or double-acting hydraulic rams between the arms and the main body, which capture energy through pod displacement and store it in accumulators. Rotary torque of the drive tubes is produced when the pods move up and down according to motion of the waves and is transmitted to the generator to generate power. In the hydraulic case, energy is stored in accumulators as pressure due to the double-acting hydraulic pistons pumping when the pods move up and down according to the motion of the waves. Hydraulic pressure drives a pump, which provides torque to the generator.

The invention discloses a rapid prediction method for drifting path and diffusion of marine spilled oil, comprising the following steps of: creating a weather field database; calculating and predicting a wind field of a sea area related to the spilled oil by an atmosphere prediction model; calculating a wave field through a sea wave model, providing open boundary conditions of tides and circulations based on harmonic constants of 8 partial tides provided by a NAO99 global tide model, and taking the wave field as a forcing field to calculate out a three-dimensional current field comprising tidal currents and wind currents through a ocean dynamics model; based on an oil database and the monitored condition of the spilled oil, calculating out the drifting path and the diffusion result of thespilled oil through a spilled oil model comprising a spilled oil expansion and drifting track prediction model and a weathering model; and directly showing the prediction result through a visualization technology to provide scientific evidences for related decisions, such as emergency treatment on marine oil spill pollution, and the like.