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Uncertainty Modeling, Error Charts and Improvement of Subgrid Models

  • P. Sagaut
  • J. Meyers
  • D. Lucor
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 97)

Abstract

Reliability and robustness are two important required features of CFD results. While a huge amount of works address the issue of model and numerical scheme validation, the search for robust models (i.e. models that exhibit a low sensitivity with respect to tuning parameters) and methods which make it possible to measure the sensitivity of the results received much less attention. The present work addresses these two issues.

Keywords

Smagorinsky Model Subgrid Model Streamwise Turbulence Intensity Smagorinsky Constant Plane Channel Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Jouhaud, J.C., Sagaut, P., Labeyrie, B.: A Kriging approach for CFD/wind tunnel data comparison. Journal of Fluids Engineering 128(4), 847–855 (2006)CrossRefGoogle Scholar
  2. Lu, S.Y., Sagaut, P.: Direct sensitivity analysis for smooth unsteady compressible flows using complex differentiation. International Journal for Numerical Methods in Fluids 53(12), 1863–1886 (2007)zbMATHCrossRefMathSciNetGoogle Scholar
  3. Lucor, D., Meyers, J., Sagaut, P.: Sensitivity analysis of LES to subgrid-scale-model parametric uncertainty using polynomial chaos. Journal of Fluid Mechanics (in press, 2007)Google Scholar
  4. Meyers, J., Sagaut, P.: On the model coefficient for the standard and the variational multiscale Smagorinsky model. Journal of Fluid Mechanics 569, 287–319 (2006)zbMATHCrossRefMathSciNetGoogle Scholar
  5. Meyers, J., Sagaut, P.: Is plane channel flow a friendly test-case for the testing of LES subgrid scale models? Physics of Fluids 19, 048105 (2007)CrossRefGoogle Scholar
  6. Meyers, J., Sagaut, P., Geurts, B.J.: Optimal model parameters for multi-objective large-eddy simulations. Physics of Fluids 18, 095103 (2006)CrossRefMathSciNetGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • P. Sagaut
    • 1
  • J. Meyers
    • 2
  • D. Lucor
    • 1
  1. 1.UPMCFrance
  2. 2.KULFrance

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