Effect of Artificial Viscosity on Central Finite Volume Solution of Time-Dependent Concentration Diffusion

摘要

Artificial viscosity operators may be used for stabilizing the explicit solution of central type finite volume method. In present paper the effect of artificial viscosity on accuracy of numerical solution of time dependent diffusion of a concentration is investigated. This effect is investigated via reduction of the coefficients of artificial viscosity operators. A bench mark test of time dependent concentration diffusion in a channel with constant velocity and a single concentration source term with available analytical solution is used for evaluation of the numerical results.