HOME    »    PROGRAMS/ACTIVITIES    »    Annual Thematic Program
Talk Abstract
The formation of structures in wall-bounded shear flows

Katie Coughlin, Université de Montreal

In this talk we will discuss the formation and dynamics of vortical structures in wall-bounded, plane parallel shear flows. These structures play an important role in the dynamics of intermittent turbulence in the near-wall region. In spatially periodic domains, this intermittency takes the form of a roughly periodic cycle of onset and collapse of turbulence. We show that the structures play an essential role in provoking the onset of turbulence, and present a theoretical model for their mathematical and physical origin. Experimentally, these flows are spatially as well as temporally intermittent, making it quite difficult to quantitatively define the characteristics of a structure. We discuss several methods of comparison of numerical and experimental data.

Back to Workshop Schedule

Connect With Us:
Go