scholarly journals Determination of the Optimal Buoy Shape for A Concept Wave Energy Converter to Harness Low Amplitude Sea Waves using Numerical Simulation

2019 ◽  
Vol 4 (3) ◽  
Author(s):  
Olakunle Kayode ◽  
Olufemi Adebola Koya ◽  
Titus Oluwasiji Ajewole
Keyword(s):  
Numerical Simulation ◽  
Wave Energy ◽  
Wave Energy Converter ◽  
Sea Waves ◽  
Energy Converter ◽  
Low Amplitude

scholarly journals EXPERIMENTAL INVESTIGATION OF A CONCEPT WAVE ENERGY CONVERTER FOR HARNESSING LOW AMPLITUDE SEA WAVES

2020 ◽  
Vol 26 (3) ◽  
pp. 97-106
Author(s):  
OLAKUNLE KAYODE ◽  
TITUS OLUWASUJI AJEWOLE ◽  
OLUFEMI ADEBOLA KOYA
Keyword(s):  
Wave Height ◽  
Wave Energy ◽  
Experimental Validation ◽  
Wave Energy Converter ◽  
Electricity Production ◽  
Sea Waves ◽  
Energy Converter ◽  
Point Absorber ◽  
Low Amplitude ◽  
Incident Waves

This paper presents the results from experimental validation of numerical simulation of a concept wave energy converter for low amplitude sea waves. The device was conceived to contain a wave amplifying device (WAD) to magnify the wave height of incident waves while point absorber buoy(s) efficiently harness the wave energy for electricity production. The validation results show that the optimum aperture angle for the WAD is 45±2 degree, and wave height magnification of 170% is possible. The optimal buoy shape for the device was confirmed as concave wedge buoy. The combination of the two in a single device shall make economical the harnessing of low amplitude waves.

Numerical Simulation of Duck Wave Energy Converter

2016 ◽  
Vol 693 ◽  
pp. 484-490
Author(s):  
Ying Xue Yao ◽  
Hai Long Li ◽  
Jin Ming Wu ◽  
Liang Zhou
Keyword(s):  
Numerical Simulation ◽  
Wave Energy ◽  
Pitch Angle ◽  
Low Cost ◽  
Three Dimensional ◽  
Angular Frequency ◽  
Wave Energy Converter ◽  
Linear Wave ◽  
Energy Converter ◽  
Flow Theories

Duck wave energy converter has the advantages of high conversion efficiency, simple construction, low cost relative to other wave power device. In the paper, the numerical simulation of the response of the converter was calculated by the AQWA software which based on the three dimensional potential flow theories. The results show that the pitch angle appear the peak when the incident wave frequency is 1rad/s and the maximum of the pitch angle come out as the linear wave normally incident the duck body, which means duck wave energy converter can absorb more wave energy in this angular frequency. The above research can provide reference for the design of the duck wave energy converter.

Preliminary laboratorial determination of the REEFS novel wave energy converter power output

2018 ◽  
Vol 122 ◽  
pp. 654-664 ◽  
Author(s):  
J.P.P.G. Lopes de Almeida ◽  
B. Mujtaba ◽  
A.M. Oliveira Fernandes
Keyword(s):  
Wave Energy ◽  
Power Output ◽  
Wave Energy Converter ◽  
Energy Converter

Numerical Simulation and Optimization of a Wave Energy Converter for the Izu Islands Sea in Japan

2014 ◽  
Author(s):  
Takeshi Kamio ◽  
Makoto Iida ◽  
Chuichi Arakawa
Keyword(s):  
Numerical Simulation ◽  
Wave Energy ◽  
Power Output ◽  
Test Site ◽  
Wave Energy Converter ◽  
Complex Conjugate ◽  
Maximum Output ◽  
Energy Converter ◽  
Simulation And Optimization ◽  
Izu Islands

The purpose of this study is the numerical simulation and control optimization of a wave energy converter to estimate the power at a test site in the Izu Islands. In Japan, ocean energy is once again being seriously considered; however, since there are many inherent problems due to severe conditions such as the strong swells and large waves, estimations are important when designing such devices. The numerical simulation method in this study combines the wave interaction analysis software WAMIT and an in-house time-domain simulation code using the Newmark-β method, and introduces approximate complex-conjugate control into the code. The optimized parameters were assessed for a regular sine wave and an irregular wave with a typical wave spectrum. With the optimized parameters, average and maximum output power were estimated for the observed wave data at the test site. The results show a more than 100 kW average power output and a several times larger maximum power output.

scholarly journals Wave–structure interactions for the distensible tube wave energy converter

2016 ◽  
Vol 472 (2192) ◽  
pp. 20160160
Author(s):  
Warren R. Smith
Keyword(s):  
Wave Energy ◽  
Sea Water ◽  
Wave Structure ◽  
Complex Interaction ◽  
Wave Energy Converter ◽  
Sea Waves ◽  
Energy Converter ◽  
Distensible Tube ◽  
Tube Wave ◽  
Work Done

A comprehensive linear mathematical model is constructed to address the open problem of the radiated wave for the distensible tube wave energy converter. This device, full of sea water and located just below the surface of the sea, undergoes a complex interaction with the waves running along its length. The result is a bulge wave in the tube which, providing certain criteria are met, grows in amplitude and captures the wave energy through the power take-off mechanism. Successful optimization of the device means capturing the energy from a much larger width of the sea waves (capture width). To achieve this, the complex interaction between the incident gravity waves, radiated waves and bulge waves is investigated. The new results establish the dependence of the capture width on absorption of the incident wave, energy loss owing to work done on the tube, imperfect tuning and the radiated wave. The new results reveal also that the wave–structure interactions govern the amplitude, phase, attenuation and wavenumber of the transient bulge wave. These predictions compare well with experimental observations.

Numerical simulation of a submerged cylindrical wave energy converter

2014 ◽  
Vol 64 ◽  
pp. 132-143 ◽  
Author(s):  
M. Anbarsooz ◽  
M. Passandideh-Fard ◽  
M. Moghiman
Keyword(s):  
Numerical Simulation ◽  
Wave Energy ◽  
Cylindrical Wave ◽  
Wave Energy Converter ◽  
Energy Converter

scholarly journals Numerical simulation of a wave energy converter using linear generator

2013 ◽  
Vol 35 (2) ◽  
pp. 103-111 ◽  
Author(s):  
Dang The Ba
Keyword(s):  
Numerical Simulation ◽  
Wave Energy ◽  
Energy Demand ◽  
Wave Energy Converter ◽  
Linear Potential ◽  
Energy Converter ◽  
Wave Condition ◽  
Mechanics Model ◽  
South Central ◽  
Offshore Wave

This paper presents results of numerical simulation for a wave energy converter using linear permanent magnet generator. The use of linear permanent generator has advantages of simple structure, minimizing mechanical loose... On the base of mechanics model, a system of equations describing the operation of the device under linear potential wave was obtained. The magnetic field in generator was calculated by Flex-PDE software. The system of movement equations was numerically solved with Matlab.Various calculations were performed with different parameters of wave conditions and device's structures to determine the device’s configuration for a 300 W output power for the offshore wave condition in South-Central offshore of Vietnam. The results also show potential of developing the wave energy conversion to meet the energy demand in some coastal and island regions of Vietnam.

scholarly journals Numerical simulation of a novel ocean wave energy converter

2018 ◽  
Vol 147 ◽  
pp. 474-481 ◽  
Author(s):  
Mohammad Jafari ◽  
Aliakbar Babajani ◽  
Parinaz Hafezisefat ◽  
Mojtaba Mirhosseini ◽  
Alireza Rezania ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Wave Energy ◽  
Wave Energy Converter ◽  
Ocean Wave ◽  
Energy Converter ◽  
Ocean Wave Energy
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