The finite volume scheme preserving maximum principle for two-dimensional time-fractional Fokker-Planck equations on distorted meshes
The finite volume scheme preserving maximum principle for two-dimensional time-fractional Fokker-Planck equations on distorted meshes
复制标题
变形网格上二维时间分数式Fokker-Planck方程的有限体积格式保留极大值原理
DOI:
10.1016/j.aml.2019.05.030
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发表时间:
2019-11
影响因子:
3.7
通讯作者:
Sheng Zhiqiang
中科院分区:
文献类型:
--
作者:
Yang Xuehua;Zhang Haixiang;Zhang Qi;Yuan Guangwei;Sheng Zhiqiang
In this paper, we develop a nonlinear finite volume scheme preserving maximum principle for 2D time fractional Fokker–Planck equations on distorted meshes. The characteristic of our method is that it satisfies the discrete maximum principle such that it keeps physical boundedness such as concentration, temperature and density, etc. The analysis is based on an adaptive approach of choosing stencil to construct a maximum-principle-preserving discrete normal flux for diffusive flux. For the advection term, we use the second-order upwind method with proper slope limiter. The fractional derivative is approximated through L1-scheme. The advantages of our scheme are that it is locally conservative and can be applied to distorted meshes with no severe constraint on the time step. Numerical results verify the theoretical result and show that our scheme can preserve discrete maximum principle.
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影响因子:
1.8
作者:
Zhang Qi;Sheng Zhiqiang;Yuan Guangwei
通讯作者:
Yuan Guangwei
DOI:
10.1007/s11425-017-9179-x
发表时间:
2017-11
期刊:
Science China Mathematics
影响因子:
--
作者:
Jiang Yingjun;Xu Xuejun
通讯作者:
Xu Xuejun
影响因子:
4.1
作者:
Yuan, Guangwei;Sheng, Zhiqiang
通讯作者:
Sheng, Zhiqiang
影响因子:
2
作者:
Junhai Ma;Yanqin Liu
通讯作者:
Junhai Ma;Yanqin Liu
影响因子:
3
作者:
Luchko, Yuri;Yamamoto, Masahiro
通讯作者:
Yamamoto, Masahiro