A numerical tool for modelling oscillating wave surge converter with nonlinear mechanical constraints

Brito, Moisés; Canelas, Ricardo B.; García-Feal, Orlando; Domínguez, José M.; Crespo, A. J. C.; Ferreira, Renata Marques; Neves, M. G.; Teixeira, Luís

doi:10.1016/j.renene.2019.08.034

Cited by 68 publications

(44 citation statements)

References 47 publications

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“…In this manner, the coupling of DualSPHysics with Project Chrono allows the complex mechanisms of the PTO system to be reproduced within the same meshless framework. DualSPHysics has proven its capability to generate and propagate waves (Altomare et al, 2017;Domínguez et al, 2019a) and to simulate satisfactorily their interaction with WECs such as an Oscillating Water Column in Crespo et al (2017Crespo et al ( , 2018 and an Oscillating Wave Surge Converter in Brito et al (2020). The first work where DualSPHysics was employed to simulate a point-absorber device was presented in Tagliafierro et al (2019).…”

Section: Introductionmentioning

confidence: 99%

Efficiency and survivability analysis of a point-absorber wave energy converter using DualSPHysics

et al. 2020

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Smoothed Particle Hydrodynamics (SPH) method is used here to simulate a heaving point-absorber with a Power TakeOff system (PTO). The SPH-based code DualSPHysics is first validated with experimental data of regular waves interacting with the point-absorber. Comparison between the numerical and experimental heave displacement and velocity of the device show a good agreement for a given regular wave condition and different configurations of the PTO system. The validated numerical tool is then employed to investigate the efficiency of the proposed system. The efficiency, which is defined here as the ratio between the power absorbed by the point-absorber and its theoretical maximum, is obtained for different wave conditions and several arrangements of the PTO. Finally, the effects of highly energetic sea states on the buoy are examined through alternative configurations of the initial system. A survivability study is performed by computing the horizontal and vertical forces exerted by focused waves on the wave energy converter (WEC). The yield criterion is used to determine that submerging the heaving buoy at a certain depth is the most effective strategy to reduce the loads acting on the WEC and its structure, while keeping the WEC floating at still water level is the worst-case scenario.

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Section: Introductionmentioning

confidence: 99%

Efficiency and survivability analysis of a point-absorber wave energy converter using DualSPHysics

et al. 2020

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“…Various approaches of numerical modelling have been implemented to understand the hydrodynamic performance of OWSC with incident wave fields. These approaches include using the method based on the potential flow theory [9,10], the smoothed particle hydrodynamics (SPH) method [11,12], and the Computational Fluid Dynamics (CFD) method based on the Navier-Stokes equations.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, to represent the PTO accurately when performing experimental and numerical simulations is a continuous challenge due to the complex systems associated with the control strategy of the PTO [12,21]. Previous work considering the influence of the PTO in the operation of the OWSC includes the experimental work done by [23,24] and the numerical and semi-analytical studies undertaken by [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

“…Whereas for resistive controls, the stiffness coefficient is set to zero and the damping coefficient is optimised. The PTO has been represented as a rotational linear spring-damper or damper systems for surface-piercing OWSC numerically in [12,28,31].…”

Section: Introductionmentioning

confidence: 99%

“…In [12], an OWSC combined with a PTO was studied by SPH and validated against experimental tests. Moreover, the influence of the PTO damping characteristics and flap inertia in the power capture of the device was investigated.…”

Section: Introductionmentioning

confidence: 99%

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Hydrodynamic Modelling of An Oscillating Wave Surge Converter Including Power Take-Off

Benites-Munoz

Huang

Anderlini

et al. 2020

JMSE

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To estimate the response of wave energy converters to different sea environments accurately is an ongoing challenge for researchers and industry, considering that there has to be a balance between guaranteeing their integrity whilst extracting the wave energy efficiently. For oscillating wave surge converters, the incident wave field is changed due to the pitching motion of the flap structure. A key component influencing this motion response is the Power Take-Off system used. Based on OpenFOAM, this paper includes the Power Take-off to establish a realistic model to simulate the operation of a three-dimensional oscillating wave surge converter by solving Reynolds Averaged Navier-Stokes equations. It examines the relationship between incident waves and the perturbed fluid field near the flap, which is of great importance when performing in arrays as neighbouring devices may influence each other. Furthermore, it investigates the influence of different control strategy systems (active and passive) in the energy extracted from regular waves related to the performance of the device. This system is estimated for each wave frequency considered and the results show the efficiency of the energy extracted from the waves is related to high amplitude pitching motions of the device in short periods of time.

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Towards SPH simulations of cavitating flows with an EoSB cavitation model

et al. 2022

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A numerical tool for modelling oscillating wave surge converter with nonlinear mechanical constraints

Cited by 68 publications

References 47 publications

Efficiency and survivability analysis of a point-absorber wave energy converter using DualSPHysics

Efficiency and survivability analysis of a point-absorber wave energy converter using DualSPHysics

Hydrodynamic Modelling of An Oscillating Wave Surge Converter Including Power Take-Off

Towards SPH simulations of cavitating flows with an EoSB cavitation model

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