刊名:Journal of Computational and Applied Mathematics
出版年:2017
出版时间:1 January 2017
年:2017
卷:309
期:Complete
页码:473-481
全文大小:579 K
文摘
The spatial–temporal spreading of a new invasive species in a habitat has interest in ecology and is modeled by a moving boundary diffusion logistic partial differential problem, where the moving boundary represents the unknown expanding front of the species. In this paper a front-fixing approach is applied in order to transform the original moving boundary problem into a fixed boundary one. A finite difference method preserving qualitative properties of the theoretical solution is proposed. Results are illustrated with numerical experiments.