Discontinuous Galerkin Finite Element Discretization for Steady Stokes Flows with Threshold Slip Boundary Condition
نویسنده
چکیده
This work is concerned with the discontinuous Galerkin finite approximations for the steady Stokes equations driven by slip boundary condition of “friction” type. Assuming that the flow region is a bounded, convex domain with a regular boundary, we formulate the problem and its discontinuous Galerkin approximations as mixed variational inequalities of the second kind with primitive variables. The well posedness of the formulated problems are established by means of a generalization of the Babus̆ka-Brezzi theory for mixed problems. Finally, a priori error estimates using energy norm for both the velocity and pressure are obtained. Mathematics Subject Classification (2010): 65N30, 76D07, 35J85.
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