Instabilities, bifurcations, and multiple solutions in expanding channel flows.
We present an experimental realization of the classical Jeffery-Hamel flows inside a wedge-shaped channel. We compare the measured velocity fields with the predictions of Jeffery-Hamel theory. A detailed experimental study of bifurcation diagrams for the solutions reveals the absolute stability of the pure outflow solution and an interesting hysteretic structure for bifurcations. We also observe a multiple-vortex flow regime predicted earlier numerically and analytically.
Putkaradze
Vakhtang
V
Colorado State University, Fort Collins, Colorado 80523, USA.
Vorobieff
Peter
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