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Experiments in Fluids

, Volume 11, Issue 2–3, pp 186–190 | Cite as

Three-segment electrodiffusion probe for velocity measurements

  • V. Sobolík
  • J. Pauli
  • U. Onken
Originals

Abstract

A cylindrical electrodiffusion probe for the measurement of liquid velocity vectors in the plane perpendicular to its axis was developed as an analogue to the triple-split film thermoanemometer. The geometry of the probe enables high directional resolution in the whole range of 360°. The total mass transfer of the probe was well correlated by the relation Sh = 0.76 Sc0.33Re0.47.

Keywords

Mass Transfer Velocity Vector Total Mass Velocity Measurement Liquid Velocity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

List of symbols

Akj, Bkj

Fourier coefficient

c [mol/m3]

depolarizer concentration

te]D [m2/s]

diffusion coefficient of species

d

[m] diameter of probe

f

[1/s] frequency of vortex formation

h

[mol/m2s] coefficient of mass transfer

Ik

normalized current of K-th segment

i

[A] total current

ik

[A] current of K-th segment

Re

Reynolds number, u d/v

Sc

Schmidt number, v/D

Sh

Sherwood number, h d/c D

Sr

Strouhal number, f d/v

v

[m/s] free stream velocity

θ

[°] flow angle, i.e. angle between approaching stream and reference direction of probe

v

[m2/s] kinematic viscosity

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References

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • V. Sobolík
    • 1
  • J. Pauli
    • 2
  • U. Onken
    • 2
  1. 1.Institute of Chemical Process Fundamentals, Czechoslovak Academy of SciencesCzechoslovakia
  2. 2.Lehrstuhl für Technische Chemie B, Universität DortmundDortmundFRG

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