93 citations · 115 across the 4 of their papers we have counts for
4 papers
A universal preconditioner for simulating condensed phase materials
David Packwood, James Kermode, Letif Mones +5
We introduce a universal sparse preconditioner that accelerates geometry optimisation and saddle point search tasks that are common in the atomic scale simulation of materials. Our…
Add-ons for Lattice Boltzmann Methods: Regularization, Filtering and Limiters
R. A. Brownlee, J. Levesley, D. Packwood +1
We describe how regularization of lattice Boltzmann methods can be achieved by modifying dissipation. Classes of techniques used to try to improve regularization of LBMs include fl…
Time Step Expansions and the Invariant Manifold Approach to Lattice Boltzmann Models
David J. Packwood, Jeremy Levesley, Alexander N. Gorban
The classical method for deriving the macroscopic dynamics of a lattice Boltzmann system is to use a combination of different approximations and expansions. Usually a Chapman-Ensko…
Entropy Balance and Dispersive Oscillations in Lattice Boltzmann Models
D. Packwood
We conduct an investigation into the dispersive post-shock oscillations in the entropic lattice-Boltzmann method (ELBM). To this end we use a root finding algorithm to implement th…