Journal of Applied Electrochemistry

, Volume 19, Issue 6, pp 940–942 | Cite as

Natural convection mass transfer at expanded metal electrodes of different structures

  • S. Piovano
  • U. Böhm
Short Communication

Keywords

Physical Chemistry Convection Mass Transfer Natural Convection Metal Electrode 

Nomenclature

A

mean mesh aperture

c0

electrolyte concentration

D

diffusivity

g

acceleration due to gravity

Ga

Galileo number=gL3/v3

Gr

Grashof number =gΔϱL3/ϱv2

k

mass transfer coefficient

L

electrode height

LD

long dimension of expanded metal

Rh

hydraulic radius=ε/Φ

Sc

Schmidt number=v/D

SD

small dimension of expanded metal

Sh

Sherwood number=kL/D

α*

densification coefficient =\(\frac{1}{\varrho }\frac{{d\varrho }}{{dc}}\)

ε

gas void fraction

εM

porosity of expanded metal

μ

dynamic viscosity

v

kinematic viscosity

θ

density

Φ

electrode area per unit volume

ψ

electrode area per unit net area

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References

  1. [1]
    S. Piovano, O. N. Cavatorta and U. Böhm,J. Appl. Electrochem. 18 (1988) 128.Google Scholar
  2. [2]
    S. Piovano and U. Böhm,J. Appl. Electrochem. 17 (1987) 127.Google Scholar
  3. [3]
    J. C. Bazan and A. J. Arvia,Electrochim. Acta 10 (1965) 1025.Google Scholar
  4. [4]
    U. Böhm,Anal. Asoc. Quim. Argentina 58 (1970) 127.Google Scholar
  5. [5]
    S. Piovano and U. Böhm,J. Appl. Electrochem. 17 (1987) 123.Google Scholar
  6. [6]
    L. Sigrist, O. Dossenbach and N. Ibl,Int. J. Heat Mass Transfer 22 (1979) 1393.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1989

Authors and Affiliations

  • S. Piovano
    • 1
  • U. Böhm
    • 1
  1. 1.Departmento de IndustriasUniversidad de Buenos AiresBuenos AiresArgentina

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