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Comparisons of Three Improved DES Methods on Unsteady Flows Past Tandem Cylinders

  • Zhixiang Xiao
  • Jian Liu
  • Jingbo Huang
  • Song Fu
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 117)

Abstract

Three advanced DES-type models coupled with adaptive dissipation scheme, DDES-2003/2006 and IDDES, are applied to predict the unsteady flow past tandem cylinders. The main differences among them are the shield functions and length scales, which leads to significant differences in mean turbulence kinetic energy, root mean square of pressure, instantaneous vorticity, and so on. The computational results are compared with almost all available measurements. These three models show good capability for the massive separation flows. IDDES performs relatively better than other two SST-DDES models. Furthermore, IDDES matches well with the measurements with trips on the rear cylinder surface.

Keywords

Eddy Viscosity Landing Gear Model Eddy Viscosity Shear Stress Transport Shear Stress Transport Model 
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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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Zhixiang Xiao
    • 1
  • Jian Liu
    • 1
    • 2
  • Jingbo Huang
    • 1
  • Song Fu
    • 1
  1. 1.School of Aerospace EngineeringTsinghua UniversityBeijingChina
  2. 2.China Aerodynamics Research & Development CenterMianyangChina

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