Sensitivities in Large Eddy Simulation and Improved Estimates of Turbulent Flow Functionals

نویسندگان

  • Mihai Anitescu
  • William J. Layton
چکیده

We consider a prototypical problem: simulate velocity and pressure in a turbulent flow using large eddy simulation (LES) and then use the results to estimate the force the underlying turbulent flow exerts on an immersed body. For eddy viscosity-type LES models we develop the appropriate continuous sensitivity equation and show how it can improve the functional estimate by using the sensitivity with respect to the user-selected length scale to incorporate the effects of the underlying unresolved small-scale fluctuations on the functionals sought.

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عنوان ژورنال:
  • SIAM J. Scientific Computing

دوره 29  شماره 

صفحات  -

تاریخ انتشار 2007