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Hydrodynamic characteristics of Oscillating Water Column caisson breakwaters
Renewable Energy, 2017Abstract This study uses the finite difference software, FLOW-3D, to develop a numerical model to simulate the hydrodynamic characteristics for Oscillating Water Column (OWC) caisson breakwaters. The numerical model is verified by a flume channel experiment for the interaction mechanism between air and water.
Yu-Shu Kuo +3 more
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Numerical Investigation of Bifurcation in Water Column Oscillator
10th International Conference on Nuclear Engineering, Volume 4, 2002Behavior of a water column oscillator with a cover gas system was studied experimentally and analytically. One of the free water surfaces was sealed with the cover gas, while the other was open to the atmosphere. The cover gas was supplied with a constant rate, and it was ejected through a valve when the water level reached a certain point.
K. Kawamata +3 more
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Sensor control for an Oscillating Water Column plant
2013 World Congress on Sustainable Technologies (WCST), 2013The Oscillating Water Column concept consists of two key elements, a turbine located in a pneumatic energy collection chamber and a doubly fed induction generator that converts energy extracted by the turbine into a form that can be returned to the network.
I. Garrido +4 more
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Nonlinear behaviour of interacting oscillating water columns
A preliminary study is made of the dynamics of Oscillating Water Columns (OWCs), in which the amplitude of internal fluid displacement is nonlinear. The OWC is a well-studied class of ocean wave-energy converters. When the machine's natural frequency is appropriately tuned, it will resonate at the prevailing ocean-swell frequency.Manasseh, Richard +2 more
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Water Column Oscillation in Partially Immersed Vertical Tubes
Journal of Engineering Mechanics, 2019AbstractTheoretical and laboratory studies were presented for the water column oscillation in a vertical tube partially immersed in a reservoir.
Harry E. Schulz, Yiyi Ma, David Z. Zhu
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Oscillating Water Column Motion Inside Circular Cylindrical Structures
Volume 10: Ocean Renewable Energy, 2019Abstract A non-linear mathematical model is presented for the Equation of Motion of the Water Column inside circular cylindrical structures in different cases, comparing to previous models in literature. Experimental model tests were carried out investigating the water column decay under given initial conditions, and an analysis is ...
Daniel de Oliveira Costa +2 more
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Dissipation in oscillating water columns
The Oscillating Water Column (OWC), regarded as the first generation Wave Energy Converter (WEC), is one of the most effective technologies for extraction of ocean wave energy. Most OWCs are designed to resonate at incoming wave frequencies, so that efficiency of the device would be the maximum.openaire +1 more source
Mechanical Model for Oscillating Water Column with Compressibility
Journal of Engineering Mechanics, 1989Certain aspects of modeling of the oscillating water column (OWC) wave‐power device are examined, with particular reference to its behavior at representative off‐resonant frequencies. Although comparison is made with a particular study incorporating the use of compressible flow equations for the air column, this work uses a simple mechanical analog ...
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Wave Interaction with Oscillating Bodies and Water Columns
1986A linear hydrodynamical theory for a system of oscillating bodies and oscillating water columns (OWCs) is described and illustrated by considering a system of one OWC and one body oscillating in a single mode only. A theoretical relationship between added mass and the energy of the near field motion is generalised to include OWCs. Numerical results are
J. Falnes, P. McIver
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Oscillating Water Column Modelling
Coastal Engineering 1992, 1993Iain G. Morrison, Clive A. Greated
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