An open-source coupled method for aeroacoustics modelling

In the present work, an open-source fast coupling interface for high-order acoustic propagation is presented. This interface is implemented between two open-source codes, OpenFOAM and Nektar++. The coupling interface is validated on a 2D cylinder case showing a very good agreement with the analytical solution and demonstrating its high efficiency as compared to traditional file-based coupled methods. A more realistic rod-airfoil wake interaction case is also studied to verify the applicability of the methodology in more complex configurations. Although the interface implementation is only realised for the chosen two open-source codes, its adaptation to other similar solvers/packages is expected to be straightforward.(C) 2022 Elsevier B.V. All rights reserved.

Automated summary

In this study, an open-source fast coupling interface for high-order acoustic propagation is introduced, which is implemented between OpenFOAM and Nektar++. The validation results demonstrate the high efficiency of the coupling interface compared to traditional file-based coupled methods, with good agreement with the analytical solution in a 2D cylinder case. Additionally, a more complex rod-airfoil wake interaction case is studied to verify the applicability of the methodology. The adaptation of the interface to other similar solvers/packages is expected to be straightforward.