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Descripción
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| One of the difficulties in icing simulations is for extended periods of exposure, when very large ice shapes are created. As well as being large, they can have complex shapes, such as double horn. To predict such ice shapes on standard three dimensional CFD meshes necessitates a multistep approach: the icing step is stopped when the ice shapes becomes too large, at which point a new mesh has to be created to allow for further CFD and ice growth simulations to be performed. To run such multistep simulation with currently available tools would involve re-meshing at each step. This makes such methods impractical, and they are therefore not currently used as such. A way to avoid the costly human intervention in the re-meshing step of multistep icing computation is to use mesh deformation instead of re-meshing. The aim of the present work is to apply an interpolation method based on Radial Basis Functions (RBF) to transfer deformations from the surface mesh to the volume mesh. The interpolation is carried on locally according to an advancing front strategy. This deformation tool has been developed specifically for icing problems. It is able to deal with localized, sharp and large deformations, even several orders of magnitude higher than the characteristic boundary layer thickness, unlike the tools traditionally used for smoother wing deformations. This tool has been combined with an automatic multistep icing framework to perform multistep calculations. Those will be presented, along with validation on typical icing shapes for two-dimensional and three-dimensional meshes. | |
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Internacional
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Si |
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ISSN o ISBN
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Entidad relacionada
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Nacionalidad Entidad
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Sin nacionalidad |
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Lugar del congreso
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Bristol, UK |