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VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 16b
SUMMARY:Comparison of three typical meshing tools and their performance in CFD study of an industrial continuous-casting tundish
DESCRIPTION:Meshing is usually prerequisite and important as a pre-processing step in CFD studies, which determines largely the following convergence speed and simulation accuracy. Herein, we compare three different meshing tools, including two typical commercial ones, ANSYS-ICEM Meshing and FLUENT Meshing, and an in-house meshing tool, Script-Meshing. Commercial meshing tools follow the traditional sub-steps of geometric construction, decomposition and mesh generation; when adjustment in any sub-step(s) is needed, repeated work is required, which is time-consuming and tedious. Script-Meshing is a parameterized mesh generation tool that combines Python scripts with the OpenFOAM blockMesh utility, which can accomplish the geometry, decomposition and mesh generation in one step with controllable parameters; it can adjust the structural parameters and meshing arrangement by just modifying a few lines of code, which can greatly speed up the meshing/remeshing task. The concept of parametric meshing is especially suitable for the meshing of metallurgical vessels, as they normally feature relatively regular internal geometry, and their designs tend to be standardized. In addition, these three meshing tools are demonstrated for meshing of an industrial one-strand continuous casting tundish with an impact pad, weir, dam, long nozzle and stopper. The meshing speed, mesh quality, convergence speed and simulation accuracy are compared between the tools. It is found that Script-Meshing takes an equivalent time with commercial tools to generate hexahedral tundish grid, and the mesh quality is higher using the in-house tool. As a result, the quality mesh can accelerate the convergence speed and obtain results with high fidelity. Script-Meshing shows remarkable performance in structured remeshing, and more than 90% regeneration time can be saved. FLUENT Meshing is good at quickly generating unstructured meshes, however they are not suitable for high-order simulation and the calculation accuracy cannot be ensured. 
CLASS:PUBLIC
DTSTART:20230615T113000
DTEND:20230615T115000
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