The cylindrical wave field of wave energy converters

McNatt, J. Cameron; Venugopal, Vengatesan; Forehand, David

doi:10.1016/j.ijome.2013.11.009

Cited by 21 publications

(19 citation statements)

References 9 publications

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“…For the conditions involving wave periods of 0.9 and 1.1 s, the WAMIT results demonstrate that the near-field waves are highly variable spatially and are consistent with the well-known alongshore standing wave ridge pattern (see also Farley 2011 andMcNatt et al 2013). For these periods, the length scales of variability are short (∼1 m) and the amplitude variability is relatively large (±20% change from incident wave height for 1 WEC and close to 50% for the 5 WEC cases), and multiple ridges are present within the observational arrays.…”

Section: Wamit-data Comparisonssupporting

confidence: 71%

Marine Renewable Energy

Yang¹,

Copping²

2017

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Section: Wamit-data Comparisonssupporting

confidence: 71%

Marine Renewable Energy

Yang¹,

Copping²

2017

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“…Other parameters than the ones discussed here are also relevant for the performance of wave energy parks. Some of these, such as the direction of the incoming wave and the local geometry, were approached in a previous paper [12] and have also been discussed elsewhere, e.g., [7,[29][30][31][32][33]. In this paper, we have restricted the study to include global geometries, number of devices, separating distance between devices, and sea states.…”

Section: Discussionmentioning

confidence: 99%

Optimizing wave energy parks with over 1000 interacting point-absorbers using an approximate analytical method

Göteman

Engström

Eriksson

et al. 2015

International Journal of Marine Energy

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PostprintThis is the accepted version of a paper published in International Journal of Marine Energy. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the original published paper (version of record):Göteman, M. (2015) Optimizing wave energy parks with over 1000 interacting point-absorbers using an approximate analytical method. Energy, Access to the published version may require subscription. N.B. When citing this work, cite the original published paper. International Journal of Marine AbstractLarge arrays of wave energy converters of point-absorber type are studied using an approximate analytical model. The model is validated against a numerical method that takes into account full hydrodynamic interactions based on linear potential flow theory. The low computational cost of the analytical model enables parameter studies of parks in the MW range and includes up to over 1000 interacting devices. The model is actuated by irregular wave data obtained at the Swedish west coast. In particular, focus is on comparing park geometries and improving park configurations to minimize the power fluctuations.

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“…(2)), for increasing truncation values, M. At M¼0, the pattern looks like a wave due to a heaving body, but with increasing M, the wave becomes more and more plane-wave-like in the region of the origin. For the scattered wave, the cylindrical solution is a very natural representation as discussed by McNatt et al (2013).…”

Section: Derivations Of the Diffraction Transfer And Force Transfer Mmentioning

confidence: 99%

“…In that paper, they considered wave power absorption and showed experimentally that the solutions are accurate within the limits of linear wave theory. McNatt et al (2013) demonstrated that arbitrary geometries can be represented by cylindrical waves and presented a new method to compute cylindrical wave coefficients for any geometry with values measured in a numerical or experimental linear wave field.…”

Section: Introductionmentioning

confidence: 99%

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A novel method for deriving the diffraction transfer matrix and its application to multi-body interactions in water waves

2015

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a b s t r a c tA matrix method was developed by Kagemoto and Yue (1986) to compute interactions between multiple three-dimensional bodies subjected to linear water waves. The approach leads to a significant reduction in computational time versus the direct method, in which the boundary value problem is solved for all bodies simultaneously. An essential component of the theory is the so-called diffraction transfer matrix, a linear operator defined for each unique geometry. However, the diffraction transfer matrix is not a standard product of a linear wave computation, for one, because it is based around an unusual representation of incident waves, that is, as partial cylindrical waves. In this paper, a new method is presented to compute the diffraction transfer matrix from plane incident waves, which enables one to derive it from standard wave-body software or experiments. Additionally, a new linear operator -the force transfer matrix, is presented, which can also be determined by usual means. Herein, the interaction theory calculation is verified against direct method results from the linear wave-body software, WAMIT, and then applied to compute absorbed power and wave field effects on a medium-sized array in spectral seas and on a large farm of 101 wave energy converters in regular waves.

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The cylindrical wave field of wave energy converters

Cited by 21 publications

References 9 publications

Marine Renewable Energy

Marine Renewable Energy

Optimizing wave energy parks with over 1000 interacting point-absorbers using an approximate analytical method

A novel method for deriving the diffraction transfer matrix and its application to multi-body interactions in water waves

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