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A Priori Uncertainty Quantification of Reacting Turbulence Closure Models using Bayesian Neural Networks
March 1, 2024, 5:43 a.m. | Graham Pash, Malik Hassanaly, Shashank Yellapantula
cs.LG updates on arXiv.org arxiv.org
Abstract: While many physics-based closure model forms have been posited for the sub-filter scale (SFS) in large eddy simulation (LES), vast amounts of data available from direct numerical simulation (DNS) create opportunities to leverage data-driven modeling techniques. Albeit flexible, data-driven models still depend on the dataset and the functional form of the model chosen. Increased adoption of such models requires reliable uncertainty estimates both in the data-informed and out-of-distribution regimes. In this work, we employ Bayesian …
abstract arxiv bayesian cs.lg data data-driven dns filter forms modeling networks neural networks numerical opportunities physics physics.data-an physics.flu-dyn quantification scale simulation turbulence type uncertainty vast
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