Spalart-Allmaras Turbulence Model Conditioning for Leading-Edge Vortex Flows

Matteo Moioli, Christian Breitsamter, Kaare Sørensen-Libik

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The physical modeling of turbulence for the partial differential equations closure used to numerically solve large-scale leading-edge vortex flows maintains a significant grade of complexity and interest in the research community. This plays a major factor for the discrepancies with experimental or high fidelity data. A baseline common turbulence model is enhanced by means of a series of additional destruction terms which are formulated with a correlated physical feature of vortical flows as fundament and calibrated by means of an automatic gradient descent optimization procedure towards experimental data. The numerical accuracy is augmented for a certain cluster of cases around the calibration case in the parametric space which describes the classification of vortex flows over highly swept aerodynamic planforms.

Original languageEnglish
Title of host publicationNotes on Numerical Fluid Mechanics and Multidisciplinary Design
PublisherSpringer Nature
Pages129-144
Number of pages16
DOIs
StatePublished - 2025

Publication series

NameNotes on Numerical Fluid Mechanics and Multidisciplinary Design
Volume155
ISSN (Print)1612-2909
ISSN (Electronic)1860-0824

Keywords

  • Modeling enhancement
  • Optimization
  • Turbulence modeling
  • Vortex flow

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