116 citations · 815 across the 29 of their papers we have counts for
29 papers
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…
A ghost-point smoothing strategy for geometric multigrid on curved boundaries
Armando Coco, Mariarosa Mazza, Matteo Semplice
We present a Boundary Local Fourier Analysis (BLFA) to optimize the relaxation parameters of boundary conditions in a multigrid framework. The method is implemented to solve ellipt…
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…
A matrix-theoretic spectral analysis of incompressible Navier-Stokes staggered DG approximation and related solvers
Mariarosa Mazza, Matteo Semplice, Stefano Serra-Capizzano +1
The incompressible Navier-Stokes equations are solved in a channel, using a Discontinuous Galerkin method over staggered grids. The resulting linear systems are studied both in ter…
Quinpi: integrating conservation laws with CWENO implicit methods
G. Puppo, M. Semplice, G. Visconti
Many interesting applications of hyperbolic systems of equations are stiff, and require the time step to satisfy restrictive stability conditions. One way to avoid small time steps…
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…