Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Temporal profiles of pillar tip displacements in a turbulent boundary layer of a flat plate. Measurements were done with two micropillars in a tandem arrangement with a spacing of 5 mm (continuous line, upstream pillar; dashed line, downstream pillar). Note that the downstream pillar shows the same movement as the upstream pillar, but with a time delay.
