Mixed finite element analysis of a thermally nonlinear coupled problem

In Loula and Zhou (Comput Appl Math 20 (2001), 321-339), a thermally coupled nonlinear elliptic system modeling a large class of engineering problems was considered, and some mathematical and numerical analyses (C-0 Lagrangian finite elements combined with a fixed point algorithm) were given. To continue our work, we propose in this article a mixed method for the potential equation and present the corresponding analyses and numerical implementations. (c) 2005 Wiley Periodicals, Inc.