We study approximations of the steady state Stokes problem governed by the power-law model for viscous incompressible non-Newtonian flow using the penalty formulation. We establish convergence and find error estimates
Electronic Journal of Differential Equations
Lefton, Lew (1-GAIT); Wei,Dongming [Wei, Dongming1] (1-NORL) A penalty method for approximations of the stationary power-law Stokes problem. (English summary) Electron. J. Differential Equations 2001, No. 7, 12 pp.