In order to achieve a more simulation-based design and certification process of jet engines in the aviation industry, the uncertainty bounds for computational fluid dynamics have to be known. This work shows the application of machine learning to support the quantification of epistemic uncertainties of turbulence models. The underlying method in order to estimate the uncertainty bounds is based on eigenspace perturbations of the Reynolds stress tensor in combination with random forests.
Assessment of data-driven Reynolds stress tensor perturbations for uncertainty quantification of RANS turbulence models
2022 ; Chicago, Illinois, USA
2022-06-21
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Deutsches Zentrum für Luft- und Raumfahrt (DLR) | 2022
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