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Towards a scalable multifidelity simulation approach for electrokinetic problems at the mesoscale

Hong, Brian D.; Perego, Mauro P.; Bochev, Pavel B.; Frischknecht, Amalie F.; Phillips, Edward G.

In this work we present a computational capability featuring a hierarchy of models with different fidelities for the solution of electrokinetics problems at the micro-/nano-scale. A multifidelity approach allows the selection of the most appropriate model, in terms of accuracy and computational cost, for the particular application at hand. We demonstrate the proposed multifidelity approach by studying the mobility of a colloid in a micro-channel as a function of the colloid charge and of the size of the ions dissolved in the fluid.