Building-block flow model for large-eddy simulation: Applications

ORAL

Abstract

A subgrid-scale (SGS) model for large-eddy simulation is proposed by devising the flow as a collection of building blocks, whose information enables the prediction of the eddy viscosity. The building blocks are simple canonical flows based on turbulent Poiseuille-Couette flow at different regimes. The model is implemented in the finite-volume compressible solver charLES and validated in a realistic aircraft geometry, the high-lift CRM, which is representative of external aerodynamic applications with trailing-edge separation. The accuracy of the model is compared against traditional SGS models such as Vreman model and Dynamic-Smagorinsky model.

*Part of this work was carried out during the CTR Summer Program 2022. G.A. was partially supported by the STTR N68335-21-C-0270 with Cascade Technologies, Inc. and the Naval Air Systems Command. The authors acknowledge the MIT SuperCloud and Lincoln Laboratory Supercomputing Center for providing HPC resources that have contributed to the research results reported within this work.

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Presenters

  • Gonzalo Arranz

    • Massachusetts Institute of Technology

Authors

  • Gonzalo Arranz

    • Massachusetts Institute of Technology

  • Yuenong Ling

    • Massachusetts Institute of Technology MI
    • Massachusetts Institute of Technology

  • Emily Williams

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology MIT

  • Konrad Goc

    • Stanford University
    • Center for Turbulence Research, Stanford University

  • Kevin P Griffin

    • Center for Turbulence Research
    • Stanford University

  • Adrian Lozano-Duran

    • MIT
    • Department of Aeronautics and Astronautics, Massachusetts Institute of Technology
    • Massachusetts Institute of Technology