OBSERVATIONS ON TRANSITION OF THE UNSTEADY PIPE FLOW.

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Abstract

The stability of a fully-developed laminar pipe flow with a superimposed sinusoidal modulation has been studied in a straight water tube. This study has identified the stability-instability boundary as that demarcating laminar and transitional flows in the three-dimensional parameter space defined by the mean and modulation Reynolds numbers Re//m, Re//w and the Stokes parameter lambda . Furthermore, this study documents the mean frequency of occurrence of 'turbulent puffs' as functions of Re//m, Re//w and lambda . This study also delineates the conditions when 'puffs' occur randomly in time as in the unexcited flow or phase-locked with the excitation.

Original languageEnglish
Title of host publicationUnknown Host Publication Title
EditorsDeyan Tan
PublisherScience Press
Pages14-15
Number of pages2
ISBN (Print)9067640050
StatePublished - 1984

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  • Cite this

    Hussain, A. K. M. F. (1984). OBSERVATIONS ON TRANSITION OF THE UNSTEADY PIPE FLOW. In D. Tan (Ed.), Unknown Host Publication Title (pp. 14-15). Science Press.