On the impedance of the pipe in laminar and turbulent pulsating flows

L. Shemer, E. Kit, Israel J Wygnanski

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The response of a facility, consisting of a valveless reciprocating pump, a large settling chamber and a long straight smooth pipe, to a periodic change in the volume was analysed. The impedance of the pipe was estimated in both laminar and turbulent flow regimes under otherwise identical flow conditions. A good agreement with theory was obtained for the laminar flow. The estimate of the pipe impedance from the experimental data in turbulent flow was based on the momentum equation as well as on the measured resonant frequency of the system. These independent methods show that the inertance of the pipe has a qualitatively different behavior in laminar and turbulent flow regimes.

Original languageEnglish (US)
Pages (from-to)185-189
Number of pages5
JournalExperiments in Fluids
Volume3
Issue number4
DOIs
StatePublished - Jul 1985
Externally publishedYes

Fingerprint

unsteady flow
Turbulent flow
laminar flow
Laminar flow
Pipe
impedance
turbulent flow
Reciprocating pumps
settling
resonant frequencies
Natural frequencies
Momentum
chambers
pumps
momentum
estimates

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Computational Mechanics
  • Fluid Flow and Transfer Processes

Cite this

On the impedance of the pipe in laminar and turbulent pulsating flows. / Shemer, L.; Kit, E.; Wygnanski, Israel J.

In: Experiments in Fluids, Vol. 3, No. 4, 07.1985, p. 185-189.

Research output: Contribution to journalArticle

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