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Power Estimates Associated With Internal Tides From the Monterey Bay Area
Monterey Bay Area Internal Tides
2015/7/14
Numerical modeling has proven to be a useful method for simulating internal tides within the coastal ocean. Monterey Bay is a location that experiences energetic semidiurnal internal tides, and they a...
Power Flow Calculation Method of Large Shipboard Power System
power flow method node voltage method asynchronous motor transformer
2011/9/9
The effect of line voltage drop is considered larger on loads, especially on asynchronous motor, transformers and other non-linear load parameters in power system of large ships. A novel power flow me...
Optimal Power-Law Description of Oceanic Whitecap Coverage Dependence on Wind Speed
Optimal Power-Law Description Oceanic Whitecap Coverage Dependence Wind Speed
2009/2/19
The optimal power-law expression for the dependence of oceanic whitecap coverage fraction W on 10 m elevation wind speed U as determined by ordinary least squares fitting applied to the combined white...
Observation of the Power Spectrum of Ocean Waves Using a Cloverleaf Buoy
Power Spectrum Ocean Waves Cloverleaf Buoy
2009/2/16
The power spectra of typical sets of ocean wave data obtained in the open ocean using a cloverleaf buoy are analyzed to determine an idealized form for the spectrum of ocean surface waves. It is shown...
Valuable mineral resources are widely distributed throughout the seabed. autonomous underwater vehicles (AUVs) are preferable to remotely-operated vehicles (ROVs) when probing for such mineral resources as the extensive exploration area makes it difficult to maintain contact with operators. AUVs depend on batteries, so their power consumption should be reduced to extend exploration time. Power for conventional marine instrument systems is incorporated in their waterproof sealing. External intermittent control of this power source until termination of exploration is challenging due to limitations imposed by the underwater environment. Thus, the AUV must have a power control system that can improve performance and maximize use of battery capacity. The authors developed such a power control system with a three-step algorithm. It automatically detects underwater operational states and can limit power, effectively decreasing power consumption by about 15%.
surface piercing propeller boundary element method hydrodynamic characteristics
2011/9/13
Demand for high-speed marine vehicles (HSMVs) is high among both commercial and naval users. It is the duty of the marine vessel’s designer to provide a hull and propulsion system that diminishes drag...
Development of a power control system for AUVs probing for underwater mineral resourcess
power control underwater prober submarine mineral resources power efficiency energy saving
2011/9/13
Valuable mineral resources are widely distributed throughout the seabed. autonomous underwater vehicles (AUVs) are preferable to remotely-operated vehicles (ROVs) when probing for such mineral resourc...
May 8, 2007，Gerardo Jose la O’ left his hometown of Bacolod City in the Philippines almost 10 years ago to attend Berkeley and then graduate school at MIT. Visits home consisted of eating fresh seafoo...