Wall-bounded flows

Abstract

Turbulent wall-bounded turbulentwall-bounded flows flows (i.e., boundary layer, pipe and channel flows) present additional measurement challenges relative to those in, say, free shear turbulent flows or grid turbulence. The physical presence of the wall and the limitations and influences it presents on the implementation of sensing technologies creates some of these challenges. Other, often more-subtle issues, however, relate to the effect that the wall has on the inherent flow dynamics. Such effects are reflected in the steep mean velocity gradient(s) in the vicinity of the surface, as well as the length and time scales of the turbulence local to the near-wall region. Regarding the latter, ..