The numerical irreversibility of the bidimensional billiard -1376 particles- [L'irréversibilité numérique du billard bidimensionnel -1376 particules-].




These simulations have a duration of 513 time steps. At t=0 just one particle starts moving (on the right-hand side and halfway up). Between t=256 and t=257, all velocities are reversed. The reversibility of the computations depends on the number of particles:


192 particles: reversibility.
336 particles: non reversibility.
768 particles: non reversibility.
1376 particles: non reversibility.



See a related picture:




(CMAP28 WWW site: this page was created on 02/25/2000 and last updated on 11/06/2021 10:37:03 -CET-)



[See the generator of this picture [Voir le générateur de cette image]]

[See all related pictures (including this one) [Voir toutes les images associées (incluant celle-ci)]]

[Please visit the related ImagesDidactiques picture gallery [Visitez la galerie d'images ImagesDidactiques associée]]
[Please visit the related ParticleSystems picture gallery [Visitez la galerie d'images ParticleSystems associée]]
[Please visit the related SensitivityToRoundingOffErrors picture gallery [Visitez la galerie d'images SensitivityToRoundingOffErrors associée]]

[Go back to AVirtualMachineForExploringSpaceTimeAndBeyond [Retour à AVirtualMachineForExploringSpaceTimeAndBeyond]]

[The Y2K Bug [Le bug de l'an 2000]]

[Site Map, Help and Search [Plan du Site, Aide et Recherche]]
[Mail [Courrier]]
[About Pictures and Animations [A Propos des Images et des Animations]]


Copyright © Jean-François Colonna, 2000-2021.
Copyright © CMAP (Centre de Mathématiques APpliquées) UMR CNRS 7641 / Ecole Polytechnique, 2000-2021.