Journal Articles Journal of Computational Physics Year : 2017

Cluster dynamics modelling of materials: a new hybrid deterministic/stochastic coupling approach

Abstract

Deterministic simulations of the rate equations governing cluster dynamics in materials are limited by the number of equations to integrate. Stochastic simulations are limited by the high frequency of certain events. We propose a coupling method combining deterministic and stochastic approaches. It allows handling different time scale phenomena for cluster dynamics. This method, based on a splitting of the dynamics, is generic and we highlight two different hybrid deterministic/stochastic methods. These coupling schemes are highly parallelizable and specifically designed to treat large size cluster problems. The proof of concept is made on a simple model of vacancy clustering under thermal ageing.

Dates and versions

hal-01378916 , version 1 (11-10-2016)

Identifiers

Cite

Pierre Terrier, Manuel Athènes, Thomas Jourdan, Gilles Adjanor, Gabriel Stoltz. Cluster dynamics modelling of materials: a new hybrid deterministic/stochastic coupling approach. Journal of Computational Physics, 2017, 350, pp.280-295. ⟨10.1016/j.jcp.2017.08.015⟩. ⟨hal-01378916⟩
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