TY - JOUR T1 - Splitting a Concave Domain to Convex Subdomains AU - Liu , Liping AU - Křížek , Michal JO - Journal of Computational Mathematics VL - 4 SP - 327 EP - 336 PY - 1998 DA - 1998/08 SN - 16 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jcm/9163.html KW - Nonlinear elliptic boundary value problems, heat radiation problem, finite elements, variational inequalities. AB -
We examine a steady-state heat radiation problem and its finite element approximation in $R^d$, $d=2, 3$. A nonlinear Stefan-Boltzmann boundary condition is considered. Another nonlinearity is due to the fact that the temperature is always greater or equal than $0 [K]$. We prove two convergence theorems for piecewise linear finite element solutions.