Steady and Oscillatory Flows in a Furrowed Channel with Arc-Shaped Walls
Flow patterns in a symmetric two-dimensional wavy-walled channel were investigated by flow visualizations at low Reynolds numbers and intermediate Strouhal numbers: Re=10–300 and St=0. 008–0.05. For steady flow, we discovered a new flow structure consisting of a regular three-dimensional flow as the Reynolds number exceeds 27.5. For oscillatory flow, the critical value of the Reynolds number at the onset of three-dimensional flow increases with the Strouhal number.
KeywordsVortex Dust Crest
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- 2.Nishimura, T.; Murakami, S.; Kawamura, Y.: Mass transfer in a symmetric sinusoidal wavy-walled channel for oscillatory flow. Submitted to Chem. Engng Sci. (1992).Google Scholar
- 4.Kistler, A. L.; Tan, F. C.: Some properties of turbulent separated flows. Physics Fluids. (1967) S167-S173.Google Scholar