Linear instability of entry flow in a pipe

Chandra Sahu, Kirti ; Govindarajan, Rama (2007) Linear instability of entry flow in a pipe Journal of Fluids Engineering, 129 (10). 1277_1-1277_4. ISSN 0098-2202

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We show that flow in the entry region of a circular pipe is linearly unstable at a Reynolds number of 1000, a factor of 10 smaller than assumed hitherto. The implication that dynamics in this region could greatly hasten the transition to turbulence assumes relevance because in spite of major recent progress, the issue of how pipe flow becomes turbulent is far from settled. Being axisymmetric and close to the centerline, the present instability would be easily distinguishable in an experiment from other generators of turbulence.

Item Type:Article
Source:Copyright of this article belongs to American Society of Mechanical Engineers.
Keywords:Flow Instability; Pipe Flow; Turbulence
ID Code:62431
Deposited On:22 Sep 2011 03:24
Last Modified:22 Sep 2011 03:24

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