Research Article

Skin Friction Reduction Characteristics of Nonsmooth Surfaces Inspired by the Shapes of Barchan Dunes

Table 1

Turbulent boundary layer thickness of nonsmooth surfaces.

L (mm)Minimum boundary layer thickness (mm)Maximum boundary layer thickness (mm)Minimum wall region thickness (mm)Maximum wall region thickness (mm)

3007.749.641.551.92
100020.2725.254.055.05