328 research outputs found
Hyperbolic Balance Laws: modeling, analysis, and numerics (hybrid meeting)
This workshop brought together
leading experts, as well as the most
promising young researchers, working on nonlinear
hyperbolic balance laws. The meeting focused on addressing new cutting-edge research in
modeling, analysis, and numerics. Particular topics included ill-/well-posedness,
randomness and multiscale modeling, flows in a moving domain, free boundary problems,
games and control
Nonlinear Hyperbolic Problems: modeling, analysis, and numerics
The workshop gathered together
leading international experts, as well as most
promising young researchers, working on the modelling, the
mathematical analysis, and the numerical methods for nonlinear
hyperbolic partial differential equations (PDEs). The meeting focussed
on addressing outstanding issues and identifying promising new
directions in all three fields, i.e.
modelling, analysis, and numerical discretization.
Key questions settled around the lack of well-posedness theories for
multidimensional systems of conservation laws and the use of hyperbolic modelling beyond
the classical topic of gas dynamics. A focal point in numerics has been
the discretization of random evolutions and uncertainty quantification.
Equally important, new multi-scale methods and schemes for asymptotic regimes
have been considered
Finite elements for scalar convection-dominated equations and incompressible flow problems - A never ending story?
The contents of this paper is twofold. First, important recent results concerning finite element
methods for convection-dominated problems and incompressible flow problems are described that
illustrate the activities in these topics. Second, a number of, in our opinion, important problems in
these fields are discussed
A finite volume scheme for nonlinear degenerate parabolic equations
We propose a second order finite volume scheme for nonlinear degenerate
parabolic equations. For some of these models (porous media equation,
drift-diffusion system for semiconductors, ...) it has been proved that the
transient solution converges to a steady-state when time goes to infinity. The
present scheme preserves steady-states and provides a satisfying long-time
behavior. Moreover, it remains valid and second-order accurate in space even in
the degenerate case. After describing the numerical scheme, we present several
numerical results which confirm the high-order accuracy in various regime
degenerate and non degenerate cases and underline the efficiency to preserve
the large-time asymptotic
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