Transition from laminar to turbulent flow in liquid filled microtubes

K. V. Sharp; R. J. Adrian

doi:10.1007/s00348-003-0753-3

Transition from laminar to turbulent flow in liquid filled microtubes

K. V. Sharp, R. J. Adrian

Research output: Contribution to journal › Article › peer-review

205 Scopus citations

Abstract

The transition to turbulent flow is studied for liquids of different polarities in glass microtubes having diameters between 50 and 247 μm. The onset of transition occurs at Reynolds numbers of ∼1,800-2,000, as indicated by greater-than-laminar pressure drop and micro-PIV measurements of mean velocity and rms velocity fluctuations at the centerline. Transition at anomalously low values of Reynolds number was never observed. Additionally, the results of more than 1,500 measurements of pressure drop versus flow rate confirm the macroscopic Poiseuille flow result for laminar flow resistance to within -1% systematic and ±2,5% rms random error for Reynolds numbers less than 1,800.

Original language	English (US)
Pages (from-to)	741-747
Number of pages	7
Journal	Experiments in Fluids
Volume	36
Issue number	5
DOIs	https://doi.org/10.1007/s00348-003-0753-3
State	Published - May 2004
Externally published	Yes

ASJC Scopus subject areas

Computational Mechanics
Mechanics of Materials
Physics and Astronomy(all)
Fluid Flow and Transfer Processes

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10.1007/s00348-003-0753-3

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abstract = "The transition to turbulent flow is studied for liquids of different polarities in glass microtubes having diameters between 50 and 247 μm. The onset of transition occurs at Reynolds numbers of ∼1,800-2,000, as indicated by greater-than-laminar pressure drop and micro-PIV measurements of mean velocity and rms velocity fluctuations at the centerline. Transition at anomalously low values of Reynolds number was never observed. Additionally, the results of more than 1,500 measurements of pressure drop versus flow rate confirm the macroscopic Poiseuille flow result for laminar flow resistance to within -1% systematic and ±2,5% rms random error for Reynolds numbers less than 1,800.",

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AU - Adrian, R. J.

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AB - The transition to turbulent flow is studied for liquids of different polarities in glass microtubes having diameters between 50 and 247 μm. The onset of transition occurs at Reynolds numbers of ∼1,800-2,000, as indicated by greater-than-laminar pressure drop and micro-PIV measurements of mean velocity and rms velocity fluctuations at the centerline. Transition at anomalously low values of Reynolds number was never observed. Additionally, the results of more than 1,500 measurements of pressure drop versus flow rate confirm the macroscopic Poiseuille flow result for laminar flow resistance to within -1% systematic and ±2,5% rms random error for Reynolds numbers less than 1,800.

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Transition from laminar to turbulent flow in liquid filled microtubes

Abstract

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