Abstract
We present a new grid movement strategy, tested for a generic fluid-structure interaction (FSI) test case. The test case describes a flat plate with a prescribed rotational movement in a turbulent channel flow. The transient turbulent flow field is calculated with a low-Re RANS model. To account for the deforming fluid domain two different grid movement methods are compared. Using transfinite interpolation with a grid-point distribution fitted to the stationary starting conditions as grid moving method leads to errors for the drag-coefficient. By employing a normalized wall distance adaptive method it is possible to fulfill the near-wall resolution requirements within every time step and, to thereby, get more accurate results. The parallelization is achieved by domain decomposition and is evaluated using a strong scaling experiment.
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Acknowledgement
This work is supported by the ‘Excellence Initiative’ of the German Federal and State Governments and the Graduate School of Computational Engineering at Technische Universität Darmstadt.
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Kneißl, S., Sternel, D.C., Schäfer, M. (2015). Parallel Algorithm for Solution-Adaptive Grid Movement in the Context of Fluid Structure Interaction. In: Mehl, M., Bischoff, M., Schäfer, M. (eds) Recent Trends in Computational Engineering - CE2014. Lecture Notes in Computational Science and Engineering, vol 105. Springer, Cham. https://doi.org/10.1007/978-3-319-22997-3_5
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DOI: https://doi.org/10.1007/978-3-319-22997-3_5
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