Numerical Simulation of Irregular Airflow within Wave Power Converter Using OWC by Action of 3-Dimensional Irregular Waves

2012 ◽  
Vol 24 (3) ◽  
pp. 189-202 ◽  
Author(s):  
Kwang-Ho Lee ◽  
Jung-Hyun Park ◽  
Do-Sam Kim
Keyword(s):  
Numerical Simulation ◽  
Power Converter ◽  
Irregular Waves ◽  
Wave Power ◽  
3 Dimensional

Numerical Simulation of Interactions between Waves and Pendulum Wave Power Converter

2013 ◽  
Vol 291-294 ◽  
pp. 1949-1953
Author(s):  
Yu Feng Tian ◽  
Yan Huang
Keyword(s):  
Reference Method ◽  
Power Converter ◽  
Navier Stokes ◽  
Wave Power ◽  
Governing Equations ◽  
Finite Element Software ◽  
Region Method ◽  
Boundary Method ◽  
Physical Model Tests ◽  
Pendulum Wave

The interactions between waves and the pendulum wave power converter were simulated, considering Navier-Stokes (N-S) equations as governing equations of the fluid, using the k-ε turbulence model and finite element software ADINA. The setting wave-generating boundary method and viscosity damping region method were developed in the numerical wave tank. Nodal velocities were applied on each layer of the inflow boundary in the setting wave-generating boundary method. The viscosity of the fluid in the damping region was obtained artificially in the viscosity damping region method, and the energy in the fluid was decreased by the viscosity in governing equations. The physical model tests were simulated with the fluid-structure interaction (FSI) numerical model. The numerical results were compared with the experimental data, and then the results were discussed. A reference method is advanced to design the pendulum wave power converter. The method to solve the complex FSI problems is explored.

FIELD EXPERIMENTS OF A WAVE POWER CONVERTER WITH CAISSON BREAKWATER

1992 ◽  
pp. 2530-2535 ◽  
Author(s):  
Hiroaki Nakada ◽  
Hideaki Ohneda ◽  
Shigeo Takahashi ◽  
Masazumi Shikamori ◽  
Tadashige Nakazono
Keyword(s):  
Field Experiments ◽  
Power Converter ◽  
Wave Power ◽  
Caisson Breakwater

scholarly journals Intelligent Airflow Controls for a Stalling-Free Operation of an Oscillating Water Column-Based Wave Power Generation Plant

Electronics ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 70 ◽  
Author(s):  
Fares M’zoughi ◽  
Izaskun Garrido ◽  
Soufiene Bouallègue ◽  
Mounir Ayadi ◽  
Aitor J. Garrido
Keyword(s):  
Power Generation ◽  
Intelligent Control ◽  
Irregular Waves ◽  
Superior Performance ◽  
Wave Power ◽  
Wells Turbine ◽  
Control Engineering ◽  
Generation Plant ◽  
Power Generation Plant ◽  
Intelligent Pid

Control engineering in renewable energy systems is a delicate and tedious task, especially due to the unpredictable nature of the renewable resources, which requires precision and robustness. These requirements can be ensured using intelligent control, which provides better performance than many conventional techniques and methods. This paper focuses on the modeling and the intelligent control of the NEREIDA wave power plant of Mutriku in Spain. In this context, the design of two novel intelligent airflow controls for a stalling-free operation of the Wells turbine-based power take-off system is presented and compared. The airflow control will ensure the avoidance of the stalling behavior using an intelligent PID controller. The first control design methodology is based on the metaheuristic algorithms to ensure the optimization of the controller gains. The second methodology is based on the fuzzy gain scheduling of the gains. Two study cases were performed to compare the optimized-PID and FGS-PID to a conventional PID in two wave conditions. The results show the superior performance of both proposed controls over the conventional PID, providing power generation improvement in regular and irregular waves.

IV-4 On absorbed power from irregular waves by wave power devices

1985 ◽  
Vol 12 (6) ◽  
pp. 578
Author(s):  
Hisaaki Maeda ◽  
Takeshi Kinoshita
Keyword(s):  
Irregular Waves ◽  
Wave Power ◽  
Power Devices ◽  
Absorbed Power

scholarly journals Study on Performance of Pendular Wave Power Converter Attached to Detached Breakwater of Pillar Type

1995 ◽  
Vol 11 ◽  
pp. 271-275
Author(s):  
Kakuya Hasegawa ◽  
Hideo Kondo ◽  
Hiroshi Umeda ◽  
Hitoshi Nishimaki
Keyword(s):  
Power Converter ◽  
Wave Power

The Numerical Simulation for Vibroacoustic Phenomena of a Slender Elastic Shell

2012 ◽  
Vol 479-481 ◽  
pp. 1365-1370
Author(s):  
Zhi Xi Yang ◽  
Sheng Hua Qiu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Thin Shell ◽  
Acoustic Pressure ◽  
Pressure Field ◽  
Elastic Shell ◽  
Numerical Examples ◽  
Longitudinal Acoustic ◽  
3 Dimensional ◽  
Variational Formulas

The vibroacoustic phenomena for the slender elastic thin shell filled with water by finite element method is introduced in this paper. The unsymmetric (u, p) variational formulas and finite element procedures are implemented for 3 dimensional structures of vibroacoustic environment based on the displacement field u and the fluid acoustic pressure field p. As illustrated by numerical examples, the longitudinal acoustic pressure eigenmodes will be occurred besides the transverse bendable eigenmodes of the slender shell, nonetheless the eigenvalues and the order of eigenmodes for the fluid acoustic pressure field can only be determined by the flexibility and geometry stiffness of the slender shell.

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