Adaptive discontinuous Galerkin methods for non-linear diffusion-convection-reaction equations


UZUNCA M., KARASÖZEN B. , Manguoglu M.

COMPUTERS & CHEMICAL ENGINEERING, cilt.68, ss.24-37, 2014 (SCI İndekslerine Giren Dergi)

Özet

In this work, we apply the adaptive discontinuous Galerkin (DGAFEM) method to the convection dominated non-linear, quasi-stationary diffusion convection reaction equations. We propose an efficient preconditioner using a matrix reordering scheme to solve the sparse linear systems iteratively arising from the discretized non-linear equations. Numerical examples demonstrate effectiveness of the DGAFEM to damp the spurious oscillations and resolve well the sharp layers occurring in convection dominated non-linear equations. (C) 2014 Elsevier Ltd. All rights reserved.