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01/18/2023
Meta variance reduction for Monte Carlo estimation of energetic particle confinement during stellarator optimization
This work introduces meta estimators that combine multiple multifidelity...
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07/02/2021
Robust multigrid techniques for augmented Lagrangian preconditioning of incompressible Stokes equations with extreme viscosity variations
We present augmented Lagrangian Schur complement preconditioners and rob...
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10/01/2020
Single-stage gradient-based stellarator coil design: Optimization for near-axis quasi-symmetry
We present a new coil design paradigm for magnetic confinement in stella...
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05/14/2020
Fireshape: a shape optimization toolbox for Firedrake
We introduce Fireshape, an open-source and automated shape optimization ...
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04/20/2020
A Reynolds-robust preconditioner for the Reynolds-robust Scott-Vogelius discretization of the stationary incompressible Navier-Stokes equations
Augmented Lagrangian preconditioners have successfully yielded Reynolds-...
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04/15/2020
Augmented Lagrangian preconditioners for the Oseen-Frank model of cholesteric liquid crystals
We propose a robust and efficient augmented Lagrangian-type precondition...
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02/06/2020
Robust multigrid methods for nearly incompressible elasticity using macro elements
We present a mesh-independent and parameter-robust multigrid solver for ...
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12/18/2019