This method presents a multigrid technique for Navier–Stokes equations, highlighting discretely divergence-free finite elements and efficient boundary conditions.
Key Points
Utilizing discretely divergence-free finite elements results in smaller system matrices, allowing for more general preconditioners.
The method avoids complex Schur complement techniques, simplifying the solution process in three-dimensional flows.
Global functions with extended support address boundary conditions effectively, especially in geometries involving flow bifurcations.
Numerical examples demonstrate both strengths and limitations of the proposed solution method across varied boundary conditions.