seafem

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SeaFEM Introduction Página 1 Developed by Compass, Ing. y Sist. http://www.compassis.com 1 SeaFEM Introduction SeaFEM is a suite of tools for the computational analysis of the effect of waves, wind and currents on naval and offshore structures, as well as for maneuvering studies. SeaFEM applications include ships, spar platforms, FPSO systems, semisubmersibles, TLPs, marine wind turbines and ocean energy harnessing devices. The wide range of analysis capabilities available in SeaFEM enables the assessment of different design alternatives, significantly reducing overall project costs and timescales. SeaFEM includes a state-of-the-art radiation and diffraction solver, enabling direct time-domain analysis of the dynamic response of the structure. Furthermore, SeaFEM is integrated in the CompassFEM environment, allowing seamless connection with the FEM structural solver RamSeries, to perform oneway and two-way implicit fluid-structure interaction analysis. The different tools available in SeaFEM are fully integrated in an advanced graphic user interface (GUI), for geometry and data definition, automatic mesh generation and visualizing the analysis results. SeaFEM GUI features a versatile tree-like interface for data managing, allowing an easy control of the whole process of entering the analysis data. To facilitate the data definition process, SeaFEM provides tools to easily configure the type of the analysis to be carried out (seakeeping, maneuvering, towing or fluid-structure interaction). Furthermore, SeaFEM provides a variety of tools which allow having a perfect control over the process and assess its quality. 2 SeaFEM Technical specifications SeaFEM has been developed for the most realistic simulations of three-dimensional multi-body radiation and diffraction problems, by solving potential flow equations in the time domain, using the finite element method on unstructured meshes. This is highly recommended for the simulation of complex geometries in large and deep domains, and for considering non-linear phenomena in the analysis or multi-body studies. In fact, SeaFEM time-domain simulations can efficiently handle non-linear hydrodynamics effects due to the

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manual of SEAFEM manual

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  • 1 SeaFEM Introduction2 SeaFEM Technical specifications2.1 Applications2.2 System requirements

    3 SeaFEM Reference3.1 Start Data window3.2 General data3.3 Computational domain generation3.4 Problem description3.5 Environment data3.5.1 Wave environment data3.5.2 Currents environment data

    3.6 Time data3.7 Numerical data3.8 Body data3.8.1 Body properties3.8.2 Degrees of freedom3.8.3 External loads3.8.4 Local external loads3.8.5 Initial conditions

    3.9 Mooring data3.10 Test type3.11 Boundary conditions3.12 Mesh generation3.13 Executing SeaFEM solver3.13.1 Automatically executing SeaFEM3.13.2 Manually executing SeaFEM3.13.3 Output files generated during process execution

    3.14 Appendix A: function editor3.15 Appendix B: Tcl extension3.15.1 Initiating Tcl extension3.15.2 Tcl interface procedures3.15.3 Examples of scripts defining a Tcl extension

    3.16 Appendix C: RAO analysis3.17 Appendix D: Multi-body analysis3.18 Appendix E: Mooring definition3.18.1 Visualization of mooring results

    3.19 Appendix F: Morison's forces effect3.20 Appendix G: Analysis advanced configuration