4 papers · 1 filter
Quinpi: Integrating stiff hyperbolic systems with implicit high order finite volume schemes
Gabriella Puppo, Matteo Semplice, Giuseppe Visconti
Many interesting physical problems described by systems of hyperbolic conservation laws are stiff, and thus impose a very small time-step because of the restrictive CFL stability c…
One- and multi-dimensional CWENOZ reconstructions for implementing boundary conditions without ghost cells
M. Semplice, E. Travaglia, G. Puppo
We address the issue of point value reconstructions from cell averages in the context of third order finite volume schemes, focusing in particular on the cells close to the boundar…
Efficient implementation of adaptive order reconstructions
Matteo Semplice, Giuseppe Visconti
Including polynomials with small degree and stencil when designing very high order reconstructions is surely beneficial for their non oscillatory properties, but may bring loss of…
A level-set multigrid technique for nonlinear diffusion in the numerical simulation of marble degradation under chemical pollutants
Armando Coco, Matteo Semplice, Stefano Serra-Capizzano
Having in mind the modelling of marble degradation under chemical pollutants, e.g.~the sulfation process, we consider governing nonlinear diffusion equations and their numerical ap…