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-   -   electroplating in AnSys (http://www.cfd-online.com/Forums/ansys/107859-electroplating-ansys.html)

karthik_1414 October 8, 2012 08:25

electroplating in AnSys
 
Hello Everyone,
Any ideas or suggestions on how to model electroplating on ansys? I would prefer the suggestions in command lines rather than the GUI. However, any suggestion is appreciated!!
Thanks, Regards,
karthik_1414

cfdonlineuser October 8, 2012 22:59

RE electroplating in AnSys
 
I assume you're talking about electrorefing (single phase), as opposed to electrowinning (multiphase process)? If so, the implementation depends if you want to include electro-potential effects, or assume there is constant current density. In the latter case, this is relatively easy. You'll need a box geometry with good resolution near walls to resolve boundary layer (mass transfer of metal in solution), and turbulence SST model works well for this, as depending on the plating rate and size of plates , turbulence will develop. You'll need a single phase water, with an additional variable (the metal species concentration), with the additional variable linked to the buoyancy force. Volumetric expansivity coefficients for various metals like copper are well known. Then apply a positive source on one vertical plate (that being related to Faraday's law), and the same source but opposite sign on the other opposing plate. Start as a steady state run then restart in transient to capture unsteady eddies are known to develop along the plates. There is a large amount of experimental data to use for example Eriksson et al from The Royal Institute of Technology Sweden, right back from 1980s. You'll find the constant density approach takes you a long way in comparisons with experimental data.

karthik_1414 October 9, 2012 09:16

hey,
Thanks! will try this!
Regards,
Karthik_1414

imnull February 26, 2013 10:40

Quote:

Originally Posted by cfdonlineuser (Post 385629)
I assume you're talking about electrorefing (single phase), as opposed to electrowinning (multiphase process)? If so, the implementation depends if you want to include electro-potential effects, or assume there is constant current density. In the latter case, this is relatively easy. You'll need a box geometry with good resolution near walls to resolve boundary layer (mass transfer of metal in solution), and turbulence SST model works well for this, as depending on the plating rate and size of plates , turbulence will develop. You'll need a single phase water, with an additional variable (the metal species concentration), with the additional variable linked to the buoyancy force. Volumetric expansivity coefficients for various metals like copper are well known. Then apply a positive source on one vertical plate (that being related to Faraday's law), and the same source but opposite sign on the other opposing plate. Start as a steady state run then restart in transient to capture unsteady eddies are known to develop along the plates. There is a large amount of experimental data to use for example Eriksson et al from The Royal Institute of Technology Sweden, right back from 1980s. You'll find the constant density approach takes you a long way in comparisons with experimental data.

is there any tutorials on it?
how easy to model electrowinning (multiphase process)?
thanks.


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