Updating of aerodynamic reduced order models generated using computational fluids dynamics

Laurence M Griffiths, Ann Gaitonde*, Dorian Jones, Friswell M.I.

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

1 Citation (Scopus)
196 Downloads (Pure)

Abstract

Reduced order models of computational fluid dynamics codes have been developed to decrease computational costs; however, each reduced order model has a limited range of validity based on the data used in its construction. Further, like the computational fluid dynamics from which it is derived, such models exhibit differences from experimental data due to uncertainty in boundary conditions and numerical accuracy. Model updating provides the opportunity to use small amounts of additional data to modify the behaviour of a reduced order model, which means that the range of validity of the reduced order model can be extended. Whilst here computational fluid dynamics data have been used for updating, the approach offers the possibility that experimental data can be used in future. In this work, the baseline reduced order models are constructed using the Eigensystem realisation algorithm and the steps used to update these models are given in detail. The methods developed are then applied to remove the effects of wind tunnel walls and to include viscous effects.

Original languageEnglish
Pages (from-to)1739-1763
Number of pages25
JournalProceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Volume232
Issue number9
Early online date29 Jun 2017
DOIs
Publication statusPublished - 1 Jul 2018

Keywords

  • computational fluid dynamics
  • Euler
  • reduced order models
  • Reynolds-averaged Navier–Stokes
  • Updating

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