Stability of Poiseuille Flow in a Corrugated Channel
The main objective of the present study is to determine stability properties of channel flow in the presence of distributed surface roughness. Detailed calculations have been carried for two-dimensional roughness in the form of a single Fourier harmonic. The available results demonstrate that such roughness induces a new flow instability that manifests itself through a generation of streamwise vortices. This instability is not active in the case of smooth walls.
KeywordsDistributed roughness flow instability
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- Cabal T. (1998): Stability of Wall Bounded Flow Modified due to the Presence of Distributed Surface Roughness. PhD Thesis, University of Western Ontario, London, Ontario, Canada.Google Scholar