Turbulence intensity similarity laws for turbulent boundary layers

Abstract

Turbulence intensity similarity laws, which are based on the attached eddy hypothesis, are tested with new high Reynolds number data obtained in the atmospheric surface layer. The existing formulation for the streamwise component was until now restricted to the log region and above. A new extended version is proposed that applies across the entire boundary layer for smooth wall flows and explains why the near- wall mixed scaling proposed by DeGraaff and Eaton, 2000 appears to be successful.