TY - JOUR T1 - Gauge-Uzawa Methods for the Navier-Stokes Equations with Nonlinear Slip Boundary Conditions AU - Hailong Qiu, Liquan Mei & Zhangxin Chen JO - International Journal of Numerical Analysis Modeling Series B VL - 1 SP - 46 EP - 56 PY - 2014 DA - 2014/05 SN - 5 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/ijnamb/218.html KW - AB - In this paper, the Gauge-Uzawa method is applied to solve the Navier-Stokes equations with nonlinear slip boundary conditions whose variational formulation is a variational inequality of the second kind with the Navier-Stokes operator. In [1], a multiplier was introduced such that the variational inequality is equivalent to the variational identity. We give the Gauge-Uzawa scheme to compute this variational identity and provide a finite element approximation for the Gauge-Uzawa scheme. The stability of the Gauge-Uzawa scheme is showed. Finally, numerical experiments are given, which confirm the theoretical analysis and demonstrate the efficiency of the new method.