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Electrokinetics; Dimensionless model; Nanoparticle translocation through nanopore; Moving meshes
Posted Jul 12, 2017, 2:08 p.m. EDT 0 Replies
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The goal is to model a charged nanoparticle translocating a nanopore under the influence of both hydrodynamic and electric forces. I used five modules:
Electrostatics;
Creeping flow;
Transport of diluted species;
Moving meshes;
Global equations;
I apply the same mesh velocity on the particle surface but as a result, the particle becomes enlarged and the meshes around the particle surface have saw-like shapes. And the electric double layer is very thin. Because for 0.1M KCl solution, the EDL thickness should around 1nm but in the model result, it is only 0.5nm.
I am wondering if I could get some help from you or the other experts. My main question is: When I build a dimensionless model using COMSOL 5.2a, what do I need to pay special attention to compared to COMSOL 3.5a?
BTW, is it recommended to use a dimensionless model in COMSOL 5.2a? (In my case, since all the dimensions are in nanoscale, COMSOL may not find the proper scale by itself. That is why I try to use a dimensionless model.)
Thanks a lot for your time!
Hello Bin Peng
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