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Abstract:UHAINA is a new phase-resolving free surface wave model for coastal engineering problems. It is based on the most advanced and recent contributions in coastal modelling from the french institutes EPOC, IMAG, IMB, and INRIA BSO. It solves a non-classical version of the depth-integrated fully-nonlinear and weakly-dispersive equations of Green-Naghdi, which allows an efficient numerical implementation. UHAINA relies on libraries developed at the INRIA BSO center, such as AeroSol for its hydrodynamic core, and PaMPA and SCOTCH to handle data management for distributed memory parallel computation. The use of these libraries, in particular AeroSol, offers a wide range of possibilities including arbitrary high-order finite element discretizations, hybrid meshes (structured and unstructured), as well as an advanced programming environment specially designed by the purpose of performance and HPC. These properties will lead in the coming years to the release of a new efficient and robust open source wave modelling platform, available for a large community of users and very suitable for practical coastal applications.

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To get a better understanding of transient stages of storm surges, this work examines the response of a Boussinesq type model to a moving low pressure system forcing, discussing results through numerical simulations in one horizontal dimension.

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