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Electrokinetics and streaming potential simulations

Posted 18 lug 2017, 14:26 GMT-4 Fluid & Heat, Computational Fluid Dynamics (CFD), Microfluidics, Chemical Reaction Engineering Version 5.2, Version 5.2a, Version 5.3 0 Replies

Anindita Bhattacharya
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How does one couple fluid flow and electric current modules? What boundary conditions are to be used? I can couple fluid flow(Navier Stokes) with electrostatics(Poisson Equation) and Transport of Diluted Species (Nernst Plank) to simulate electrosmotic flow. But how does one simulate streaming potential as given in the attached paper?How does one incorporate the resistivity of the ionic solution to calculate electric potential? What should be the boundary conditions used?

I am enclosing the file I have created to create electrosmotic velocity.-sorry I can't seem to attach the file. It says file extension error. I will be happy to send the file over email
But instead of applying an electric potential on the left hand of the channel, I want to create a flow using pressure difference. The surface charge on top and bottom walls stay intact. I want to specify a resistivity/conductivity of the electrolyte solution and get electric potential as output. In short, I am trying to simulate what I have in this short youtube video
www.youtube.com/watch?v=GGmw83COFwM
Just instead of zeta potential, I have a surface charge in my simulation (top and bottom surfaces- but instead of that, you can also specify a zeta potential)

0 Replies Last Post 18 lug 2017, 14:26 GMT-4
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