Building-block-flow model for large-eddy simulation
ORAL
Abstract
A unified subgrid-scale+wall model for large-eddy simulation is proposed by devising the flow as a collection of building blocks flows. The information from the building blocks enables the prediction of the eddy viscosity. The building blocks are simple canonical flows based on the turbulent Poiseuille-Couette configuration at different flow regimes. The model is constructed to predict wall-attached turbulence, adverse pressure gradient effects, separation, statistically unsteady turbulence, and laminar flow. The approach is particularly designed for coarse grids by accounting for numerical errors.
*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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Publication: "Self-critical machine-learning wall-modeled LES for external aerodynamics", A. Lozano-Duran & J. Bae. Center for Turbulence Research, Annual Research Briefs 2020.
Presenters
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Adrian Lozano-Duran
- MIT
- Department of Aeronautics and Astronautics, Massachusetts Institute of Technology
- Massachusetts Institute of Technology