Evolutionary optimization of an anisotropic compliant surface for turbulent friction drag reduction

  title={Evolutionary optimization of an anisotropic compliant surface for turbulent friction drag reduction},
  author={Koji Fukagataa and Stefan Kernb and Philippe Chatelainb and Petros Koumoutsakosb and Nobuhide Kasagic},
  • Koji Fukagataa, Stefan Kernb, +2 authors Nobuhide Kasagic
  • Published 2008
Direct numerical simulation (DNS) of the channel flow with an anisotropic compliant surface is performed in order to investigate its drag reduction effect in a fully developed turbulent flow. The computational domain is set to be 3δ × 2δ × 3δ, where δ is the channel half-width. The surface is passively driven by the pressure and wall-shear stress fluctuations, and the surface velocity provides a boundary condition for the fluid velocity field. An evolutionary optimization method (CMA-ES) is… CONTINUE READING


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