Effects of heterogeneous surface geometry on secondary flows in turbulent boundary layers
Takfarinas Medjnoun, Christina Vanderwel, Bharathram Ganapathisubramani
Abstract
The effect of spanwise heterogeneous surface geometry on turbulent boundary layer secondary flows and on skin friction is investigated experimentally. The surfaces consist of smooth streamwise-aligned ridges of different shapes and widths with spanwise wavelengths comparable to the boundary layer thickness ( of the total shear stress when strong secondary motions occur.
Topics & Concepts
TurbulenceGeometryMechanicsSurface (topology)Boundary (topology)PhysicsMathematicsMathematical analysisFluid Dynamics and Turbulent FlowsWind and Air Flow StudiesHeat Transfer Mechanisms