EI、Scopus 收录
中文核心期刊
Wu Ting, Shi Beiji, Wang Shizhao, Zhang Xing, He Guowei. WALL-MODEL FOR LARGE-EDDY SIMULATION AND ITS APPLICATIONS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(3): 453-466. DOI: 10.6052/0459-1879-18-071
Citation: Wu Ting, Shi Beiji, Wang Shizhao, Zhang Xing, He Guowei. WALL-MODEL FOR LARGE-EDDY SIMULATION AND ITS APPLICATIONS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(3): 453-466. DOI: 10.6052/0459-1879-18-071

WALL-MODEL FOR LARGE-EDDY SIMULATION AND ITS APPLICATIONS

  • Large-eddy simulation (LES) is an important method to investigate unsteady turbulent flows. The cost of the wall-resolved LES is comparable to that of direct numerical simulation, which prevents the applications of the LES to wall-bounded turbulences at high Reynolds numbers. The grid length would be of the order of the viscous length to resolve the near-wall flow structures, which causes the prohibitive computational cost of the wall-resolved LES. Wall-models circumvent the flow details near the wall to avoid resolving all the flow structures near the wall, which significantly reduce the computation cost and have been successfully combined with the LES for turbulent flows. We discuss the basic idea of wall-models for LES and review the wall-stress models with implementation details. The construction and characteristics of the equilibrium models and the two-layer models are discussed in detail. The limitations of the wall-stress models and their improvements to account for the non-equilibrium effects are also discussed. We review the state of the art of the wall shear stress models and provide a hierarchical diagram for the current models. Finally, we present the applications of the Werner-Wengle model to the LES of flows over periodic hills.
  • loading

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return