Electrochemical analysis of Taylor vortices

Wouahbi, F.; Allaf, K.; Sobolı́k, V.

doi:10.1007/s10800-006-9211-2

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“…Deslouis et al (2004) used an array of two-segment circular ED probes for the measurements of fluctuations of the axial and transversal components of wall shear rate in turbulent flow. Wouahbi et al (2006) studied the distribution of the azimuthal and axial components of the shear rate at the outer fixed wall in Couette-Taylor flow using three-segment ED probes. Due to geometrical and other imperfections of the ED probes, it is necessary to calibrate them.…”

Section: Introductionmentioning

confidence: 99%

Calibration of a segmented friction probe flush mounted in a sphere

Sobolı́k¹,

Legrand²,

Latifi³

et al. 2007

Meas. Sci. Technol.

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A calibration theory for segmented probes flush mounted in a sphere exposed to uniform fluid flow was developed. The theory was checked experimentally by towing the sphere of diameter 2R = 22.2 mm with a three-segment circular electrodiffusion probe of diameter 2RE = 0.526 mm through a pool of aqueous solution of potassium ferro/ferricyanide. Oriented wall shear rates were detected and analysed at Reynolds number 660. Hydrodynamic models of the wall shear rate distribution along the sphere surface in a uniform stream are reviewed. The principles of the direction specific flow measurements using three-segment electrodiffusion friction probes are explained.

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Section: Introductionmentioning

confidence: 99%