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Numerical Modelling of Regular Waves Propagation and Breaking Using Waves2Foam

Numerical Modelling of Regular Waves Propagation and Breakin...

作者： Behrang Chenari shiva saadatian Almerindo Domingues Ferreira University of Coimbra Department of Mechanical Engineering

Nowadays, ocean energy has attracted more attention among the researchers due to its massive energy potential. As designing, constructing and testing prototypes are both expensive and time consuming, recently, many researchers have developed numerical wave tanks to simulate the behaviour of the waves as well as the interaction of waves with wave energy converters. This paper aims to model numerical wave tanks, using waves2Foam-a solver within Open FOAM, to show the propagation of waves, as well as different wave breaking types. Firstly, a flat-bottom wave tank is modelled in order to simulate both generation and absorption of the waves. Such results are benchmarked against laboratory experiments data and the comparison between simulation and experiment results showed a good agreement. Furthermore, some additional cases are modelled to assess the capability of waves2 Foam in absorption of waves’ reflection from the outlet boundary. Secondly, different sloped wave tanks are modelled to investigate the capability of waves2 Foam in properly simulating wave breakings. Results demonstrated that waves2 Foam is not only able to well simulate wave generation and absorption but it is also able to simulate all types of wave breaking. This work presents waves2 Foam as powerful toolbox which can properly model waves based on different wave theories. However, some limitations of the solver were identified.

关键词： Breaking waves numerical wave tank Open FOAM relaxation zone Stokes wave theory waves2Foam

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