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| Hauptseite > Workflowsammlungen > Eingereichte Dokumente > CFD/CAA Simulations on HPC Systems |
| Hauptseite > Workflowsammlungen > Eingereichte Dokumente > CFD/CAA Simulations on HPC Systems |
| Contribution to a book | FZJ-2019-05813 |
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2016
Springer International Publishing
Cham
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Please use a persistent id in citations: doi:10.1007/978-3-319-46735-1_12
Abstract: In this paper, a highly scalable numerical method is presented that allows to compute the aerodynamic sound from a turbulent flow field on HPC systems. A hybrid CFD-CAA method is used to compute the flow and the acoustic field, in which the two solvers are running in parallel to avoid expensive I/O operations for the acoustic source terms. Herein, the acoustic perturbation equations are solved by a high-order discontinuous Galerkin scheme using the acoustic source terms obtained from an approximate solution of the Navier-Stokes equations. Both solvers run simultaneously and operate on differently refined hierarchical Cartesian grids. This direct-hybrid method is validated by monopole and pressure pulse simulations and is used for performance measurements on current HPC systems. The results highlight the limitations of classic hybrid methods and show that the new approach is suitable for highly parallel simulations. Michael
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