Journal of Fluid Mechanics

Computational and experimental study of a captive annular eddy

Enzo O.  Macagno a1 and Tin-Kan  Hung a1
a1 Institute of Hydraulic Research, The University of Iowa, Iowa City

Article author query
macagno eo   [Google Scholar] 
hung tk   [Google Scholar] 


Results of calculations and experiments on the flow of a viscous liquid through an axisymmetric conduit expansion are reported. The streamlines and vorticity contours are presented as functions of the Reynolds number of the flow. The dynamic interaction between the main flow and the captive eddy between it and the walls is analysed, and it is concluded that, for laminar flow, the main role of the eddy is that of shaping the flow with a rather small energy exchange.

(Published Online March 28 2006)
(Received June 27 1966)