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14 papers · 2 filters
Test of some numerical limiters for the conservative PSM scheme for 4D Drift-Kinetic simulations
Jerome Guterl, Jean-Philippe Braeunig, Nicolas Crouseilles +4
The purpose of this work is simulation of magnetised plasmas in the ITER project framework. In this context, Vlasov-Poisson like models are used to simulate core turbulence in the…
Differentiation by integration with Jacobi polynomials
Da-Yan Liu, Olivier Gibaru, Wilfrid Perruquetti
In this paper, the numerical differentiation by integration method based on Jacobi polynomials originally introduced by Mboup, Fliess and Join is revisited in the central case wher…
Two-dimensional Finite Larmor Radius approximation in canonical gyrokinetic coordinates
Alexandre Mouton, Emmanuel Frenod
In this paper, we present some new results about the approximation of the Vlasov-Poisson system with a strong external magnetic field by the 2D finite Larmor radius model. The proo…
Image Segmentation with Multidimensional Refinement Indicators
Hend Ben Ameur, Guy Chavent, Francois Clément +1
We transpose an optimal control technique to the image segmentation problem. The idea is to consider image segmentation as a parameter estimation problem. The parameter to estimate…
A totally Eulerian Finite Volume solver for multi-material fluid flows: Enhanced Natural Interface Positioning (ENIP)
Raphaël Loubère, Jean-Philippe Braeunig, Jean-Michel Ghidaglia
This work concerns the simulation of compressible multi-material fluid flows and follows the method FVCF-NIP described in the former paper Braeunig et al (Eur. J. Mech. B/Fluids, 2…
Reconstructing initial data using observers : error analysis of the semi-discrete and fully discrete approximations
Ghislain Haine, Karim Ramdani
A new iterative algorithm for solving initial data inverse problems from partial observations has been recently proposed in Ramdani, Tucsnak and Weiss [15]. Based on the concept of…