Abstract
Dimensional analysis and overlap arguments lead to a prediction of a region in the streamwise velocity spectrum of wall-bounded turbulent flows in which the dependence on the streamwise wave number, , is given by . Some recent experiments have questioned the existence of this region. In this Letter, experimental spectra are presented which support the existence of the law in a high-Reynolds-number boundary layer. This Letter presents the experimental results and discusses the theoretical and experimental issues involved in examining the existence of the law and the reasons why it has proved so elusive.
- Received 23 May 2005
DOI:https://doi.org/10.1103/PhysRevLett.95.074501
©2005 American Physical Society