108 citations · 481 across the 28 of their papers we have counts for
31 papers
A thermodynamically compatible semi-implicit finite volume scheme for the compressible Euler equations
M. Dumbser, G. Puppo, S. Rinaldi +1
In this work we construct a new semi-implicit (SI) hyperbolic and thermodynamically compatible (HTC) scheme for the compressible Euler equations of gasdynamics. The challenge there…
Dissipation-dispersion analysis of fully-discrete implicit discontinuous Galerkin methods and application to stiff hyperbolic problems
Maya Briani, Gabriella Puppo, Giuseppe Visconti
The application of discontinuous Galerkin (DG) schemes to hyperbolic systems of conservation laws requires a careful interplay between space discretization, carried out with local…
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…
Derivation and stability analysis of macroscopic multi-lane models for vehicular traffic flow
Matteo Piu, Michael Herty, Gabriella Puppo
The mathematical modeling and the stability analysis of multi-lane traffic in the macroscopic scale is considered. We propose a new first order model derived from microscopic dynam…
Stability analysis of microscopic models for traffic flow with lane changing
Matteo Piu, Gabriella Puppo
This paper investigates the mathematical modeling and the stability of multi-lane traffic in the microscopic scale, studying a model based on two interaction terms. To do this we p…
An all Mach number finite volume method for isentropic two-phase flow
Maria Lukacova-Medvid'ova, Gabriella Puppo, Andrea Thomann
We present an implicit-explicit finite volume scheme for isentropic two phase flow in all Mach number regimes. The underlying model belongs to the class of symmetric hyperbolic the…
Implicit relaxed all Mach number schemes for gases and compressible materials
Andrea Thomann, Angelo Iollo, Gabriella Puppo
We present an implicit relaxation scheme for the simulation of compressible flows in all Mach number regimes based on a Jin Xin relaxation approach. The main features of the propos…
Model of vehicle interactions with autonomous cars and its properties
M. Herty, G. Puppo, G. Visconti
We study a hierarchy of models based on kinetic equations for the descriptions of traffic flow in presence of autonomous and human--driven vehicles. The autonomous cars considered…
Angle dependence in coupling conditions for shallow water equations at canal junctions
Maya Briani, Gabriella Puppo, Magali Ribot
In this paper we propose a numerical Riemann problem solver at the junction of one dimensional shallow-water canal networks. The junction conditions take into account the angles wi…
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…
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…
From kinetic to macroscopic models and back
M. Herty, G. Puppo, G. Visconti
We study kinetic models for traffic flow characterized by the property of producing backward propagating waves. These waves may be identified with the phenomenon of stop-and-go wav…
An all speed second order well-balanced IMEX relaxation scheme for the Euler equations with gravity
Andrea Thomann, Gabriella Puppo, Christian Klingenberg
We present an implicit-explicit well-balanced finite volume scheme for the Euler equations with a gravitational source term which is able to deal also with low Mach flows. To visua…
An all speed second order IMEX relaxation scheme for the Euler equations
Andrea Thomann, Markus Zenk, Gabriella Puppo +1
We present an implicit-explicit finite volume scheme for the Euler equations. We start from the non-dimensionalised Euler equations where we split the pressure in a slow and a fast…
Kinetic models of BGK type and their numerical integration
Gabriella Puppo
This minicourse contains a description of recent results on the modelling of rarefied gases in weakly non equilibrium regimes, and the numerical methods used to approximate the res…
The BGK approximation of kinetic models for traffic
Michael Herty, Gabriella Puppo, Sebastiano Roncoroni +1
We study spatially non-homogeneous kinetic models for vehicular traffic flow. Classical formulations, as for instance the BGK equation, lead to unconditionally unstable solutions i…
Arbitrary order finite volume well-balanced schemes for the Euler equations with gravity
C. Klingenberg, G. Puppo, M. Semplice
This work presents arbitrary high order well balanced finite volume schemes for the Euler equations with a prescribed gravitational field. It is assumed that the desired equilibriu…
Kinetic ES-BGK models for a multi-component gas mixture
Christian Klingenberg, Marlies Pirner, Gabriella Puppo
We consider a multi component mixture of inert gas in the kinetic regime by assuming that the total number of particles of each species remains constant. In this article we shall i…
A consistent kinetic model for a two-component mixture of polyatomic molecules
Christian Klingenberg, Marlies Pirner, Gabriella Puppo
We consider a multi component gas mixture with translational and internal energy degrees of freedom assuming that the number of particles of each species remains constant. We will…
A consistent kinetic model for a two-component mixture with an application to plasma
Christian Klingenberg, Marlies Pirner, Gabriella Puppo
We consider a non reactive multi component gas mixture.We propose a class of models, which can be easily generalized to multiple species. The two species mixture is modelled by a s…
Cool WENO schemes
Isabella Cravero, Gabriella Puppo, Matteo Semplice +1
This work is dedicated to the development and comparison of WENO-type reconstructions for hyperbolic systems of balance laws. We are particularly interested in high order shock cap…
Multivalued fundamental diagrams of traffic flow in the kinetic Fokker-Planck limit
Giuseppe Visconti, Michael Herty, Gabriella Puppo +1
Starting from interaction rules based on two levels of stochasticity we study the influence of the microscopic dynamics on the macroscopic properties of vehicular flow. In particul…
CWENO: uniformly accurate reconstructions for balance laws
I. Cravero, G. Puppo, M. Semplice +1
In this paper we introduce a general framework for defining and studying essentially non-oscillatory reconstruction procedures of arbitrarily high order accuracy, interpolating dat…
Analysis of a heterogeneous kinetic model for traffic flow
Gabriella Puppo, Matteo Semplice, Andrea Tosin +1
In this work we extend a recent kinetic traffic model to the case of more than one class of vehicles, each of which is characterized by few different microscopic features. We consi…