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Retardation of electrolytic mass transport in collinear electric-magnetic fields

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Abstract

The adverse effect of parallel magnetic and electric fields perpendicular to horizontal electrodes facing upwards in combined natural and forced convection was studied experimentally. The results are interpreted in terms of convective-diffusion models modified for the magnetic field interaction.

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Abbreviations

B:

magnetic flux density vector

B 0 :

magnitude of its vertically imposed value

c :

concentration of the electrolyte

D :

electrolyte diffusion coefficient

d :

anode-cathode separation distance

d e :

equivalent channel diameter

F :

Faraday's constant

i :

cathode current density

i:

current density vector

L :

electrode length

M :

molar mass of electrolyte

n :

interaction parameter

p :

pressure drop

(Ra):

Rayleigh number

(Re):

Reynolds number (characteristic length:d e)

(Sc):

Schmidt number

(Sh):

Sherwood number

v :

velocity

x :

co-ordinate along reactor length

y :

co-ordinate perpendicular to electrode surfaces

z :

valency

α :

densification coefficient

γ :

shape factor

¯γ :

magnetic interaction parameter

θ :

dimensionless electrolyte concentration

λ :

characteristic length

v :

kinematic viscosity

ρ :

density

σ :

electric conductance

τ :

residence time

FC:

related to forced convection

NC:

related to natural convection

L:

related to electrode length

x, y :

related to thex andy co-ordinates

∞:

related to fully developed (bulk) conditions

0:

related to the absence of the magnetic field

References

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Author notes

  1. T. S. Rutherford

    Present address: Department of Business Administration, Harvard University, Cambridge, Mass., USA

Authors and Affiliations

  1. Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada

    T. Z. Fahidy & T. S. Rutherford

Authors
  1. T. Z. Fahidy
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  2. T. S. Rutherford
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Fahidy, T.Z., Rutherford, T.S. Retardation of electrolytic mass transport in collinear electric-magnetic fields. J Appl Electrochem 10, 481–488 (1980). https://doi.org/10.1007/BF00614081

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