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- Philippe Helluy, Frédéric Golay, +10 authors Olivier Allain
- 2005

This paper is devoted to the numerical simulation of wave breaking. It presents the results of a numerical workshop that was held during the conference LOMA04. The objective is to compare several mathematical models (compressible or incompressible) and associated numerical methods to compute the flow field during a wave breaking over a reef. The methods… (More)

In this paper we investigate algorithms based on the Fast Legendre Transform (FLT) in order to compute tabulated Equation Of State (EOS) for fluids with phase transition. The equation of state of a binary mixture is given by an energy minimization principle. According to the miscible or immiscible nature of the mixture, the energy of the system is either a… (More)

The numerical simulation of compressible two–phase fluid flows exhibits severe difficulties , in particular, when strong variations in the material parameters and high interface velocities are present at the phase boundary. Although several models and discretizations have been developed in the past, a thorough quantitative validation by experimental data… (More)

- Philippe Helluy, Jean-Marc Hérard, Hélène Mathis
- J. Computational Applied Mathematics
- 2012

- Gloria FACCANONI, Rémi ABGRALL, +4 authors Vincent GIOVANGIGLI
- 2009

- Philippe HELLUY, Nhung PHAM, A. CRESTETTO
- 2013

We construct an hyperbolic approximation of the Vlasov equation in which the dependency on the velocity variable is removed. The resulting model enjoys interesting conservation and entropy properties. It can be numerically solved by standard schemes for hyperbolic systems. We present numerical results for one-dimensional classical test cases in plasma… (More)

Nous construisons une approximation hyperbolique de l'équation de Vlasov dans laquelle la dépendance dans la variable de vitesse a été supprimée. Nous commençons par transformer l'équation de Vlasov par rapport à la variable de vitesse comme dans [9]. Puis nous semi-discrétisons l'équation par des éléments nis dans la variable spectrale. Nous présentons des… (More)

- Philippe Helluy, Thomas Strub, Michel Massaro, Malcolm Roberts
- IWOCL
- 2015

Hyperbolic conservation laws are important mathematical models for describing many phenomena in physics or engineering. The Finite Volume (FV) method and the Discontinuous Galerkin (DG) methods are two popular methods for solving conservation laws on computers. Those two methods are good candidates for parallel computing:
• they require a large… (More)

We present several numerical simulations of conservation laws on recent multicore processors, such as GPU's, using the OpenCL programming framework. Depending on the chosen numerical method, different implementation strategies have to be considered, for achieving the best performance. We explain how to program efficiently three methods: a finite volume… (More)

In this paper, we propose a new very simple numerical method for solving liquid-gas compressible flows. Such flows are difficult to simulate because classical conservative finite volume schemes generate pressure oscillations at the liquid-gas interface. We extend to several dimensions the random choice scheme that we have constructed in [13]. The extension… (More)

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