Rights statement: This is the author’s version of a work that was accepted for publication in Ocean Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Ocean Engineering, 111, 2015 DOI: 10.1016/j.oceaneng.2015.11.011
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Numerical and experimental analysis of the power output of a point absorber wave energy converter in irregular waves
AU - Rahmati, Mohammad
AU - Aggidis, George Athanasios
N1 - This is the author’s version of a work that was accepted for publication in Ocean Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Ocean Engineering, 111, 2015 DOI: 10.1016/j.oceaneng.2015.11.011
PY - 2016/1/1
Y1 - 2016/1/1
N2 - This paper examines the optimum power output of a pitching-surge point absorber wave energy converter in irregular wave climates. A mathematical model based on frequency domain is used as the first step to estimate the hydrodynamic parameters of the device and its potential power output in realistic sea waves. The numerical results predict that the point absorber energy converter has the potential to absorb more energy than what is contained in its own geometrical width. The optimum power of the device is then obtained from wave tank experiments in irregular wave climates. The comparison of numerical and experimental results demonstrates that the frequency domain method based on linear theory will lead to an overestimation of the energy absorption for this device. The frequency domain method provides an upper estimate for wave energy absorption due to the non-linear, viscous effects and constrained amplitude of device oscillation. However, comparison of the performance of the device with other point absorber wave energy converters shows that this wave energy converter is one of the most efficient in terms of absorbing wave energy.
AB - This paper examines the optimum power output of a pitching-surge point absorber wave energy converter in irregular wave climates. A mathematical model based on frequency domain is used as the first step to estimate the hydrodynamic parameters of the device and its potential power output in realistic sea waves. The numerical results predict that the point absorber energy converter has the potential to absorb more energy than what is contained in its own geometrical width. The optimum power of the device is then obtained from wave tank experiments in irregular wave climates. The comparison of numerical and experimental results demonstrates that the frequency domain method based on linear theory will lead to an overestimation of the energy absorption for this device. The frequency domain method provides an upper estimate for wave energy absorption due to the non-linear, viscous effects and constrained amplitude of device oscillation. However, comparison of the performance of the device with other point absorber wave energy converters shows that this wave energy converter is one of the most efficient in terms of absorbing wave energy.
KW - Wave energy converter
KW - Point absorber
KW - Irregular waves
KW - Capture width ratio
U2 - 10.1016/j.oceaneng.2015.11.011
DO - 10.1016/j.oceaneng.2015.11.011
M3 - Journal article
VL - 111
SP - 483
EP - 492
JO - Ocean Engineering
JF - Ocean Engineering
SN - 0029-8018
ER -