Sever Hirstoaga

chargé de recherche Inria

Inria Paris équipe ALPINES 2, rue Simone Iff, Paris 12e

Thèmes de recherche

• Modélisation cinétique de plasmas
• Méthodes numériques pour systèmes de type Vlasov-Poisson. Développement logiciel en SeLaLib
• Convergence à deux échelles pour équations de type Vlasov (application aux méthodes d'approximation)
• Algorithme pararéel

Publications

Revues internationales

• L. Grigori, S.A. Hirstoaga, J. Salomon: A parareal algorithm for a highly oscillating Vlasov-Poisson system with reduced models for the coarse solving, Computers & Mathematics with Applications , 130, pp. 137--148, 2023. Lien sur HAL.


• L. Grigori, S.A. Hirstoaga, V. T. Nguyen, J. Salomon: Reduced model-based parareal simulations of oscillatory singularly perturbed ordinary differential equations, Journal of Computational Physics , 436, 110282, 2021. Lien sur HAL.


• Y. Barsamian, S. A. Hirstoaga, E. Violard, Efficient Data Layouts for a Three-Dimensional Electrostatic Particle-in-Cell Code, Journal of Computational Science , 27, pp. 345--356, 2018. Lien sur HAL.


• N. Crouseilles, S.A. Hirstoaga, X. Zhao : Multiscale Particle-in-Cell methods and comparisons for the long-time two-dimensional Vlasov-Poisson equation with strong magnetic field, Computer Physics Communications , 222, pp. 136--151, 2018. Lien sur HAL.


• D. Coulette, S.A. Hirstoaga, G. Manfredi, Effect of collisional temperature isotropisation on ELM parallel transport in a tokamak scrape-off layer, Plasma Physics and Controlled Fusion , 58(8), 085004 (14pp), 2016. Lien sur HAL.


• E. Frénod, S.A. Hirstoaga, M. Lutz, E. Sonnendrücker, Long time behaviour of an exponential integrator for a Vlasov-Poisson system with strong magnetic field, Communications in Computational Physics , 18 (2), 263--296, 2015. pdf


• E. Frénod, S.A. Hirstoaga, M. Lutz, Long-time simulation of a highly oscillatory Vlasov equation with an exponential integrator, Comptes Rendus Mécanique , special issue on "Theoretical and numerical approaches for Vlasov-Maxwell equations", 342 (10-11), 595--609, 2014. pdf


• E. Frénod, S.A. Hirstoaga, E. Sonnendrücker, An exponential integrator for a highly oscillatory Vlasov equation, DCDS-S, special issue on "Numerical Methods Based on Two-Scale Convergence and Homogenization", 8 (1), 169--183, 2015. Lien sur HAL.


• N. Crouseilles, P. Glanc, S.A. Hirstoaga, E. Madaule, M. Mehrenberger, J. Pétri, A new fully two-dimensional conservative semi-Lagrangian method: applications on polar grids, from diocotron instability to ITG turbulence, European Physical Journal D, 68(9), 2014. Lien sur HAL.


• N. Crouseilles, E. Frénod, S.A. Hirstoaga, A. Mouton : Two-Scale Macro-Micro decomposition of the Vlasov equation with a strong magnetic field, Mathematical Models and Methods in Applied Sciences, 23(8), 1527--1559, 2013. Lien sur HAL.


• D. Moulton, W. Fundamenski, G. Manfredi, S.A. Hirstoaga, D. Tskhakaya : Comparison of free-streaming ELM formulae to a Vlasov simulation, Journal of Nuclear Materials , 438, S633-S637, 2013. Lien sur HAL.


• G. Manfredi, S.A. Hirstoaga, S. Devaux : Vlasov modelling of parallel transport in a tokamak scrape-off layer, Plasma Physics and Controlled Fusion , 53(1), 015012 (15pp), 2011. Lien sur HAL.



• P.L. Combettes, S.A. Hirstoaga : Visco-penalization of the sum of two monotone operators, Nonlinear Analysis: Theory, Methods, and Applications, 69, 579--591, 2008. Lien sur HAL.


• S.A. Hirstoaga : Iterative selection methods for common fixed point problems, Journal of Mathematical Analysis and Applications, 324 (2), 1020--1035, 2006. Lien sur HAL.


• P.L. Combettes, S.A. Hirstoaga : Approximating Curves for Nonexpansive and Monotone Operators, Journal of Convex Analysis, 13 (3/4), 633--646, 2006.


• P.L. Combettes, S.A. Hirstoaga : Equilibrium programming in Hilbert spaces, Journal of Nonlinear and Convex Analysis, 6 (1), 117--136, 2005.

Conférences internationales avec comités de lecture

• Y. Barsamian, A. Charguéraud, S. A. Hirstoaga, M. Mehrenberger, Efficient Strict-Binning Particle-in-Cell Algorithm for Multi-Core SIMD Processors, Euro-Par (24th International European Conference on Parallel and Distributed Computing), LNCS vol. 11014, pp. 749--763, 2018, Springer link, pdf.


• Y. Barsamian, J. Bernier, S. A. Hirstoaga, M. Mehrenberger, Verification of 2Dx2D and Two-Species Vlasov-Poisson Solvers, ESAIM: Proceedings. Vol. 63, p. 78-108, 2018. Lien sur HAL.


• Y. Barsamian, S.A. Hirstoaga, E. Violard: Efficient Data Structures for a Hybrid Parallel and Vectorized Particle-in-Cell Code, Parallel and Distributed Processing Symposium Workshops (IPDPSW), 2017 IEEE International, (PDSEC 2017), 1168--1177, 2017. Lien sur HAL.


• D. Coulette, G. Manfredi, S.A. Hirstoaga: Kinetic modeling and numerical simulation of plasma-wall interactions in magnetic fusion devices, Proceedings of the 43rd EPS Conference on Plasma Physics, 05.127, 2016. Lien sur HAL.


• E. Chacon-Golcher, S.A. Hirstoaga, M. Lutz : Optimization of Particle-In-Cell simulations for Vlasov-Poisson system with strong magnetic field, ESAIM: Proceedings, Vol. 53, 177--190, 2016. pdf


• E. Frénod, M. Gutnic, S.A. Hirstoaga : First order Two-Scale Particle-In-Cell numerical method for the Vlasov equation, ESAIM: Proceedings, Vol. 38, 348--360, 2012. Lien sur HAL.


• G. Manfredi, S. Hirstoaga, S. Devaux, E. Havlickova, D. Tskhakaya : Parallel transport in a tokamak scrape-off layer, Proceedings of the 38th EPS Conference on Plasma Physics, P4.063, 2011. Lien sur HAL.


• C. Chauvin, S.A. Hirstoaga, P. Kabelikova, A. Rousseau, F. Bernardin, M. Bossy : Solving the Uniform Density Constraint in a Stochastic Downscaling Model, ESAIM: Proceedings, 24, 97--110, 2008. Lien sur HAL.

Preprints

• E. Madaule, S.A. Hirstoaga, M. Mehrenberger, J. Pétri : Semi-Lagrangian simulations of the diocotron instability, 2013. Lien sur HAL.


• P. Degond, S.A. Hirstoaga, M.-H. Vignal : The Vlasov model under large magnetic fields in the low-Mach number regime, 2009. Lien sur HAL.