An augmented Lagrangian preconditioner with multigrid-inexact blocks makes GMRES iteration counts for Runge-Kutta time-stepped Navier-Stokes robust in viscosity, mesh size, time step, and stage count.
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An Augmented Lagrangian Preconditioner for Navier--Stokes Equations with Runge--Kutta in Time
An augmented Lagrangian preconditioner with multigrid-inexact blocks makes GMRES iteration counts for Runge-Kutta time-stepped Navier-Stokes robust in viscosity, mesh size, time step, and stage count.