Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN Print: 1-56700-135-1

KINEMATICS OF ENGULFMENT IN A TURBULENT WAKE

Sinopsis

Hot-wire measurements were made simultaneously in two homogeneous, "horizontal" planes in the far wake region of a cylinder. A technique to identify the spatial characteristics of the large scale bulges at the interface between the internal turbulent motions and the external irrotational flow was developed. Together with the hot-wire data, this technique allowed us to relate unambiguously the outer bulges to the inner coherent structures. Other kinematic features of the engulfment process such as the relative positioning of critical points and the primary locations of inflow to the wake were described.