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Selection of a staggered grid for inertia-gravity waves in shallow water
Beckers, J.-M. (2002). Selection of a staggered grid for inertia-gravity waves in shallow water. Int. J. Numer. Methods Fluids 38(8): 729-746
In: International Journal for Numerical Methods in Fluids. Wiley Interscience: Chichester; New York. ISSN 0271-2091; e-ISSN 1097-0363, meer
Peer reviewed article  

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    VLIZ: Open Repository 280432 [ OMA ]

    Marien; Zoet water

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  • Beckers, J.-M., meer

    The problem of accuracy in propagating inertia-gravity waves on Arakawa grids is investigated. It is shown that the sole analysis of spatial discretization and the recommendation of the B-grid for coarse resolution models and C-grid for high resolution models must be re-analysed when time discretization is taken into account as well. For a chosen time discretization, a coarse C-grid is shown for example, to increase precision when using larger time-steps (up to the stability limit) whereas the precision of the B-grid decreases. Here, an analysis of error for different grids in function of the space-time resolutions and computational costs is presented and some recommendations on the choice of the particular staggered grid for a given application are outlined.

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