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Interfacing of CAD models to a common fusion modelling grid description [Elektronski vir]
Telenta, Marijo ; Kos, Leon, 1966- ; Akers, Robert
Visualisation of the scientific data is essential in analysing the results obtained from the fusion codes. The data, together with the mesh, is preferably stored in a standardised format. One step ...further is to use a common modelling grid description in which data from various fusion modelling codes, together with mesh, will be stored. In that sense, general grid description (GGD) is used as a format for storing data in the EUROfusion Integrated Modelling (EU-IM) database. OpenCASCADE CAD kernel is used to transform the CAD model into a triangular mesh for GGD storage in database. The ultimate goal of this work is to control the defeaturing of the CAD model applied to the desired level of detail (LOD) in order for it to be used as input for different meshing codes. In this paper, description is given of the grid generation using the open-source CAD-kernel Open CASCADE with the PythonOCC library. In addition, the process of storing the grid in GGD format will be explained. Finally, a ParaView plugin is shown for reading the data. The aim of the project presented in this paper is to automate the tedious task of CAD model defeaturing and meshing, which is often done manually, and to prepare it as a CAD service for use in scientific workflow engines in order to ensure data provenance.
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