DES Applied to an Isolated Synthetic Jet Flow

  • H. Xia
  • N. Qin
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 97)


DES solutions for an isolated synthetic jet flow are presented. A cubic-root filter with continuous eddy viscosity variation at the RANS-LES switching point is introduced. The intention is to explore the effects of unstructured grids for such a filtering strategy. Dissipation controlled Roe’s scheme is applied and dynamic grid techniques are employed to implement the periodically moving diaphragm. The results obtained are compared with the experiments and a previous study using structured grids. No inferiority is observed for the current unstructured grid result in comparison with the structured ones from the previous study.


Eddy Viscosity Structure Grid Unstructured Grid Filter Width Approximate Riemann Solver 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • H. Xia
    • 1
  • N. Qin
    • 2
  1. 1.Civil & Computational Engineering CentreUniversity of WalesSwanseaUK
  2. 2.Dept. of Mechanical EngineeringUniversity of SheffieldUK

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