..., and the results are compared with existing analytical, and experiment results available in the literature. The results show that the Bragg resonance effects due to the bottom undulation topography significantly increases the efficiency of the OWC. Various parameters relevant to the behavior of the trapezoidal OWC...

... ABSTRACT The oscillating water column (OWC) is one of the most efficient types among wave energy converters (WEC), and its design of the front lip wall is essential for its resilience against extreme weather and recurrent wave conditions. This study aims to present an enhanced design of OWC...

... ABSTRACT The present study investigates the hydrodynamic performance of an onshore land-based OWC-WEC device by analyzing its annual averaged efficiency in a random wave environment. To analyze the hydrodynamic efficiency of the wave energy converter device in a real marine environment, two...

... foam helps to improve the sweep efficiency of CO 2 through NGH reservoirs, which stops methane hydrate zones from being quickly bypassed. This controlled mobility ensures a more efficient displacement of methane from the hydrate structure. Our experiments show that surfactants enhance methane recovery...

... conditions including irregular seas and winds in different directions. Through this process, it is confirmed that the present free-running simulation can be used for evaluation of ship operation performances such as operation efficiency and course keeping. INTRODUCTION In recent years, the importance...

... ABSTRACT The analysis of the propulsion performance considering the ship motion in waves is an important factor for the efficient operation of a ship. The interaction between the propeller and the free surface due to the ship motion in waves has a great influence on the propulsion performance...

... in the demonstration of power generation from a tidal current at Kanmon Strait (Hiraki, et. al. 2010). There are some drawbacks for the Darrieus-type turbine. One of them is the lower efficiency of the power generation, as compared to the horizontal-axis turbines. This is one of the reason why the Darrieus turbine...

... were compared with available data from the references. In conclusion, the dolphin can reach a very high speed and efficiency. Introduction For a long time, dolphins have always been considered as good swimmers with extremely high thrust efficiency and minimum resistance. There is still debate...

... Abstract Marine current turbine (MCT) is crucial equipment in ocean energy exploration, whose hydrodynamic performance has a significant effect on efficiency of energy extraction. Due to the existence of friction of seabed, inflow velocity varies with vertical location. In this paper...

... of hydrodynamics in wave power converters the numerical calculations for several variants of structures like OWEC and OWSC are performed. The results of model experiments on irregular wind waves for OWSC model are presented. The new variants of converters are proposed. To improve efficiency of wave converters...

... between devices for various gaps is not the same. This interference has direct impact to the performance or the efficiency of the device. This paper introduces the performance study of TCP devices considering the interference between rotating rotors with axial, transverse and diagonal arrangements. Series...

...-based LNG plants. While onshore LNG facilities have traditionally focused on power efficiency as a key criterion for process design and equipment selection, offshore LNG would require not only power efficiency but also safety and compactness. A new natural gas liquefaction cycle is proposed...

... amount of LNG imported in 2005 was 58.6million tons to Japan, or 30% of the world trade in LNG. api 581 pod evaluation nde reliability matrix artificial intelligence gas monetization shear wave probability lng reliability matrix efficiency inspection effectiveness lng industry...

... in the OWC have been measured to obtain energy absorption of the OWC. Horizontal shear force, vertical force, and pitching moment at the column root have been measured to clarify wave force acting on the columns simultaneously as well. Finally efficiency of primary energy conversion of the OWC columns has...

... diameter flow velocity installation nodule diameter production monitoring coefficient flow rate circular lifting test pump efficiency reservoir surveillance feeder concentration pump revolution efficiency equation lifting test installation head loss production control nodule...

... different concentration sge transformation river battery resistance membrane concentration solution concentration power plant efficiency transformation coastal zone energy source electrodialysis battery sge potential change salinity gradient dependence Paper No. P0803 Kniazhev...

... & gas deep-ocean mining system seafloor operation mining efficiency artificial intelligence ocean pipe offshore isope chung miner glomar explorer Fig. 1 Hughes Glomar Explorer ABSTRACT The recent state of technological development in the countries that have joined deep-ocean mining...

... are determined by numerical tests by the criterion of maximum power efficiency of the WEMU. Plots of aerodynamic forces acting on the blades along the WEMU turbine's perimeter are presented. Influences of the turbine's solidity, turbine velocity, and wind velocity on the total aerodynamic force are found out...

... is analysis of influence of some constructional parameters of system tethered vehicle-communication cable on developed traction, power consumption and efficiency of its using and design based on optimal selection of propulsion system components. DESIGN METHOD For numerical research a variant of Tethered...

... of the outside, so that it has to save energy stored in the vehicle during a cruise; for this purpose, a shape with low resistance is desirable. Efficiency of the propeller depends on the flow field around the vehicle, so that a design taking into consideration mutual interference between the propeller...