Abstract
In this research, the finite volume method is employed to solve the 3D Helmholtz equation of sound propagation in the coastal environment. The grid system consists of triangular grids in horizontal plane and sigma-layers in vertical dimension. A 3D sparse matrix solver with complex coefficients is formed for solving the resulting acoustic pressure field. The recent CSLP and ADEF1 preconditioning methods are applied to efficiently solve the matrix system iteratively with MPI parallelization using a high performance cluster. This model is then coupled with the Finite Volume Community Ocean Model (FVCOM) for simulating sound generated by offshore wind energy platform constructions in a range-dependent setting. Details of the development and initial validation will be presented. Keywords: Sound, Coastal Ocean, Finite Volume, Offshore Wind, Coupling, CSLP, ADEF1, Helmholtz equation.
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