Turbulent boundary layer structure identification via POD

  title={Turbulent boundary layer structure identification via POD},
  author={By J. R. Baltzer and Ronald J. Adrian and Xiaohua Wu},
Proper orthogonal decomposition (POD) is applied to the direct numerical simulation (DNS) of a turbulent boundary layer performed by Wu & Moin (2010), and the resulting POD modes of various scales are examined. The modes include structures resembling those observed in instantaneous flow fields, such as large-scale motions of streamwise velocity with ramp-like wall-normal growth. Other modes correspond closely to nearwall streaks. In addition, POD modes that are constant across the spanwise… CONTINUE READING