5 papers
A complete simulation framework for stone degradation on 3D real geometries
Silvia Preda, Gabriella Bretti, Francesco Freddi +2
We present a complete workflow for predicting stone degradation phenomena, such as marble sulfation, in works of art. The main challenge is to accurately acquire the geometry of th…
Dissolution of carbonate stones caused by CO2 pollutant: Numerical modelling of erosion scenarios
Elishan Christian Braun, Gabriella Bretti, Samuele Ferri +2
In this paper, we introduce a mathematical model of carbonate-stone erosion driven by the penetration of CO2-derived acidity into the water-filled pore network. The model couples t…
SCOUT: Semi-Lagrangian COnservative and Unconditionally sTable schemes for nonlinear advection-diffusion problems
Silvia Preda, Walter Boscheri, Matteo Semplice +1
In this work, we propose a new semi-Lagrangian (SL) finite difference scheme for nonlinear advection-diffusion problems. To ensure conservation, which is fundamental for achieving…
Implicit reconstruction from point cloud: an adaptive level-set-based semi-Lagrangian method
Silvia Preda, Matteo Semplice
We propose a level-set-based semi-Lagrangian method on graded adaptive Cartesian grids to address the problem of surface reconstruction from point clouds. The goal is to obtain an…
Surface reconstruction from point cloud using a semi-Lagrangian scheme with local interpolator
Silvia Preda, Matteo Semplice
We propose a level set method to reconstruct unknown surfaces from point clouds, without assuming that the connections between points are known. We consider a variational formulati…