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We propose a fast MATLAB implementation of the mini-element (i.e. P 1-Bubble/P 1) for the finite element approximation of the generalized Stokes equation in 2D and 3D. We use cell arrays to derive vectorized assembling functions. We also propose a Uzawa conjugate gradient method as an iterative solver for the global Stokes system. Numerical experiments show that our implementation has an (almost) optimal time-scaling. For 3D problems, the proposed Uzawa conjugate gradient algorithm outperforms MAT-LAB built-in linear solvers.

Efficient MATLAB Codes for the 2D/3D Stokes Equation with the Mini-Element