Journal of Physical Chemistry B, Vol.109, No.16, 7843-7849, 2005
Computational electrochemistry: Finite element simulation of a disk electrode with ultrasonic acoustic streaming
Computer simulations using the finite element method (FEM) are used to predict the correlation between the transport limiting current (I-lim) and parameters such as diffusion coefficient, source to electrode separation, source power, and medium viscosity for a sonicated disk electrode in "face on" mode. The fluid dynamics and diffusion layer are modeled directly using FEM and predict that the electrode is uniformly accessible, I-lim is proportional to the diffusion coefficient to the 2/3 power and I-lim is proportional to the square root of the source power. Curves are also calculated relating I-lim to the source to electrode separation and liquid viscosity.