Numerical Studies of Directional Wavemaker Performance

Newman, J. N.

doi:10.5957/attc-2007-002

Cited by 5 publications

References 8 publications

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Analysis of wave generators and absorbers in basins

Newman

2010

Applied Ocean Research

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Wave generation and absorption are analyzed in a closed basin, within the framework of linear potential theory. Wavemakers on the sides of the basin are used for both generating and absorbing the waves. Relations are derived governing the control of the absorbers, to reduce or eliminate reflected waves from the walls of the basin. These relations are tested by showing numerical examples of wave systems in square and circular basins, first without a body in the basin and then with a floating hemisphere. Computations of the added mass, damping, and exciting forces on the hemisphere are presented to indicate the effectiveness of the wave absorbers. Two-dimensional results are shown in the time domain to illustrate some of the transient effects associated with different types of absorber controls.

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Analysis of wave generators and absorbers in basins

Newman

2010

Applied Ocean Research

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Validation of a hydrodynamic model for a curved, multi-paddle wave tank

Gyöngy¹,

Richon²,

Bruce³

et al. 2014

Applied Ocean Research

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Obtaining a hydrodynamic model for a wave tank has many benefits, from allowing the useable test zone to be identified, to helping with the tuning of the wavemaker controllers. This paper explores a first-order, boundary element method (BEM) that has been previously proposed for modelling wave tanks, applying the method to a tank with a unique, curved geometry. In a series of experiments, the model is shown to provide a good representation of the wave profile across the tank. Inherent limitations in the method are also identified: in the case when only a single paddle is moved, significant, un-modelled second-order spurious waves are found to emerge. Moreover, the representation of the wave absorbers by a simple, partially reflecting surface does not adequately reproduce the measured spatial variation in the reflection coefficient.

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