The criteria for the electromagnetic scaling of electrolytic (seawater) systems are reviewed and are shown to be satisfied in the DACS (dimension and conductivity scaling) physical scale modelling of the potential characteristics of the surface of cathodically protected surfaces and the surrounding seawater.
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- r(x, y, z):
- t :
- t :
physical scaling factor
- E(r, t :
- E f :
electric field under flow conditions
- H(r, t):
static dielectric constant
- J(r, t):
electrical current density
- J f :
electrical current density under flow conditions
- J lim :
(diffusion) limited electrical current density
- V :
electric potential (voltage)
- V a :
- V i :
- V ia :
anode/electrolyte interface potential
- Vs :
potential in electrolytic solution
- V ic :
cathode/electrolyte interface potential
- V c :
- V 0 :
cathodic overpotential constant
- V h :
- V ic(J):
current-voltage characteristic of cathode/electrolyte interface
electrical charge density
- π+ :
electrical charge density of positive ions
- ϱ− :
electrical charge density of negative ions
- v(r, t):
velocity of ion
- v + :
velocity of positive ion
- v p :
flow velocity of electrolyte
- R p :
polarization resistance at electrode/electrolyte interface
- a :
- b :
- T :
- P :
- n :
- n i :
number of ions with charge z i
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Ditchfield, R.W., McGrath, J.N. & Tighe-Ford, D.J. Theoretical validation of the physical scale modelling of the electrical potential characteristics of marine impressed current cathodic protection. J Appl Electrochem 25, 54–60 (1995). https://doi.org/10.1007/BF00251265
- Physical Chemistry
- Scale Modelling
- Physical Scale
- Cathodic Protection
- Potential Characteristic