A new weak Galerkin finite element method, called generalized weak Galerkin method ({g}WG), is introduced for Stokes equations in this paper by using a new definition of the weak gradient. Error estimates in energy norm and $L^2$ norm for the velocity and $L^2$ norm for the pressure are derived for elements with arbitrary combination of polynomials. Some numerical examples are presented to verify the effectiveness, theoretical convergence orders, and robustness of the proposed scheme.
翻译:本文采用对弱梯度的新定义,对斯托克斯方程式采用了一种称为普遍弱Galerkin法({g}WG)的新的弱Galerkin限定要素法({g}WG),对多式任意结合的元素,得出能源标准错误估计值和速度标准2美元和压力标准2美元标准2美元,并提出了一些数字实例,以核实拟议办法的有效性、理论趋同顺序和稳健性。