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Periodic oscillation in curved duct flows |
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| Authors: | Liqiu Wang Tianliang Yang |
| Affiliation: | Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China |
| Abstract: | We report the first experimental evidence and numerical prediction of fully developed periodic oscillation in curved duct flows. The oscillation is between symmetric/asymmetric 2-cell flows and symmetric/asymmetric 4-cell flows. It appears in the range where there are no stable steady fully developed flows. We also report both experimental and numerical evidence of flow stability change along a solution branch without passing limit/bifurcation points. |
| Keywords: | Bifurcation Dean number Stability |
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