Abstract
An improved, robust, error reducing CFD-mesh deformation module for the parallel simulation environment FlowSimulator is presented. The mesh deformation method is based on radial basis function interpolation for the surface- and volume- mesh nodes combined with a group-weighting and displacement-blending approach. Since the latter weighting and blending approaches are based on given wall distances to the group surfaces, another module for the wall distance computation is introduced. Due to performance reasons, the number of input data locations (base points) used for the radial basis function interpolation must be limited. Therefore, methods have been developed to reduce the number of base points while keeping the interpolation error as low as possible. Furthermore, the modules have been parallelized for usage in multi-node high performance computing clusters. Finally, the capability of a multidisciplinary, parallel application is demonstrated in FlowSimulator with reduced errors and uncertainties.
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References
FlowSimulator: Common simulation environment for integrated parallel CFD applications, http://dev.as.dlr.de/gf/project/fsdm
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Barnewitz, H., Stickan, B. (2013). Improved Mesh Deformation. In: Eisfeld, B., Barnewitz, H., Fritz, W., Thiele, F. (eds) Management and Minimisation of Uncertainties and Errors in Numerical Aerodynamics. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 122. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-36185-2_9
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DOI: https://doi.org/10.1007/978-3-642-36185-2_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-36184-5
Online ISBN: 978-3-642-36185-2
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