The next seminar “Modelling of materials – theory, model reduction and efficient numerical methods” will take place on Wednesday from 9:00 in lecture room K3. The talks will be given by Karel Tůma. Please see the details below.
Speaker: Karel Tůma
Title: Nitsche method: weak enforcement of Dirichlet boundary conditions
Abstract: We introduce the Nitsche method for weak enforcement of Dirichlet boundary conditions in the case of Stokes equations. We show three approaches to derive this method: (i) derivation by Baltussen et al., (ii) simple method, (iii) using Lagrange multipliers, and obtain symmetric and non-symmetric versions of the Nitsche method. This method is then implemented in FEniCS finite element code and applied to the impermeability stick-slip boundary condition and Navier-slip boundary condition.