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INT: S-A turbulence model - added enhanced DDES shielding function

Andrew Heather requested to merge feature-deck-renard into develop

Activated using the [optional] shielding keyword having the options:

  • standard: [default] same as v2406 and earlier

  • ZDES2020: new option based on the reference:

    Deck, S., Renard, N. (2020). Towards an enhanced protection of attached boundary layers in hybrid RANS/LES methods. Journal of Computational Physics, 400, 108970. DOI:10.1016/j.jcp.2019.108970

  • Tutorial: $FOAM_TUTORIALS/incompressible/pimpleFoam/LES/NACA4412

Contribution from @MarianFuchs at UpstreamCFD GmbH

Integrated by Andrew Heather OpenCFD Ltd.

Edited by Andrew Heather

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