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- W4313303638 abstract "The potential for data-driven applications to scale-resolving simulations of turbulent flows is assessed herein. Multigrid sequential data assimilation algorithms have been used to calibrate solvers for Large Eddy Simulation for the analysis of the high-Reynolds-number flow around a rectangular cylinder of aspect ratio 5:1. This test case has been chosen because of a number of physical complexities which elude accurate representation using reduced-order numerical simulation. The results for the statistical moments of the velocity and pressure flow field show that the data-driven techniques employed, which are based on the Ensemble Kalman Filter, are able to significantly improve the predictive features of the solver for reduced grid resolution. In addition, it was observed that, despite the sparse and asymmetric distribution of observation in the data-driven process, the data augmented results exhibit perfectly symmetric statistics and a significantly improved accuracy also far from the sensor location." @default.
- W4313303638 created "2023-01-06" @default.
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- W4313303638 date "2022-12-28" @default.
- W4313303638 modified "2023-09-23" @default.
- W4313303638 title "Multigrid sequential data assimilation for the large-eddy simulation of a massively separated bluff-body flow" @default.
- W4313303638 doi "https://doi.org/10.48550/arxiv.2212.13831" @default.
- W4313303638 hasPublicationYear "2022" @default.
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