Preliminary Evaluation and Applications of a Consistent Hybrid LES/RANS Method

  • Heng XiaoEmail author
  • Michael Wild
  • Patrick Jenny
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 117)


In this work, we introduce a recently proposed framework for hybrid LES/RANS modeling and its preliminary applications on simple flows. In this framework, the filtered and Reynolds averaged Navier-Stokes (RANS) equations are solved simultaneously in the whole domain. The novelty of the framework is the dual-solution approach and the consistency between the two solutions achieved via additional drift terms. A hybrid LES/RANS solver is developed within this framework and used to simulate flows in a plane channel and flows in a channel with periodic hills. The results demonstrate that the hybrid solver leads to significantly improved results compared to traditional LES on the same grid.


RANS Model Drift Force RANS Equation RANS Region Hybrid Solver 
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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Institute of Fluid DynamicsETH ZürichZürichSwitzerland

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