Overview
REEF3D::NHFLOW is a three-dimensional non-hydrostatic wave model. This model is implemented in the open-source hydrodynamics framework REEF3D. It uses a Godunov-type scheme for shock-capturing properties, albeit with WENO flux reconstruction. In order to achieve good dispersion characteristics, a pressure correction. As part of the REEF3D framework, MPI parallelization, hypre’s multigrid solvers and high-order finite difference WENO discretization methods are readily available In contrast to m the existing fully-nonlinear potential flow solver FNPF, the new model includes the capability to model the dynamic wetting and drying processes in the swash zone.
- High-order discretization in space (5th-order WENO) for the free surface boundary conditions
- High-order discretization in time (3rd-order TVD Runge-Kutta)
- Full Parallelization with domain decomposition and MPI
- Robust and accurate breaking waves through shock-absorbing solver
- Wetting and drying algorithm for complex coastlines
- Wave propagation from deep water to shallow water
- Geometric multigrid preconditioned CG-solver (hyper) for efficient solution of the Laplace equation
- Varying bathymetry with geometry input form DIVEMesh
Applications
Coastal Wave Modeling: Baltic Coast at Narva-Jöesuu (Estonia):
Coastal Wave Modeling: Ericeira, Portugal
REEF3D::NHFLOW for phase-resolved swell modeling for deep water waves transitioning to intermediate and shallow water towards the beaches of Ericeira. Domain size: 9km x 9km
REEF3D 
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