ELECTROCHEMICAL KINETIC SIMULATIONS OF MIXED DIFFUSION HOMOGENEOUS REACTION PROBLEMS BY THE SAULYEV FINITE-DIFFERENCE ALGORITHMS

The validity of the Saul'yev finite difference integration schemes for the simulation of electrokinetic diffusion/homogeneous reaction probl ems has been investigated. Respective algorithms have been formulated for typical examples involving first and second order homogeneous reac tions. Their numerical properties have been examined in calculations a nd compared with those of the classic explicit, second order Runge-Kut ta and Crank-Nicolson methods. The averaged [LR,RL] Saul'yev algorithm has been found to be especially attractive, showing efficiency compar able with the Crank-Nicolson method but at lower programming effort. T he general, method-oriented formulation of Saul'yev algorithms is also presented.