期刊名称：Journal of Emerging Trends in Computing and Information Sciences
电子版ISSN：2079-8407
出版年度：2013
卷号：4
期号：4
页码：422-427
出版社：ARPN Publishers
摘要：In this paper, a model for diffusion of nuclide in backfilled material is introduced, and discrete schemes presented, too. The algorithm to accomplish the simulation is given, to avoid error and exception that may occur during calculation, the check mesh algorithm is introduced. To implement a numeric solver for the simulation of diffusion of nuclide, several classes are designed, such as runtime class, mesh data class, environment class, calculation parameter class and calculation class. And then this solver is implemented with finite element method. Finally, the solver is used to calculate one case built for a 10000-years simulation of diffusion of nuclide in backfilled materials. The simulating result is satisfying, and the curve of nuclide concentration over time shows the nuclide concentration field becomes a stable one after about 3000 years.
关键词：diffusion of nuclide; backfilled materials; discrete schemes; numeric solver; finite element method
