Unconditionally energy stable large time stepping method for the L2-gradient flow based ternary phase-field model with precise nonlocal volume conservation
Unconditionally energy stable large time stepping method for the L2-gradient flow based ternary phase-field model with precise nonlocal volume conservation
复制标题
基于L2梯度流的精确非局部体积守恒三元相场模型的无条件能量稳定大时间步长方法
DOI:
10.1016/j.cma.2019.112743
复制
发表时间:
2020-04
期刊:
影响因子:
--
通讯作者:
Xiaofeng Yang
中科院分区:
文献类型:
--
作者:
Jun Zhang;Xiaofeng Yang
We consider numerical approximations for solving a new, Allen–Cahn type ternary phase-field model. We first formulate a phase-field model from an energetic variational formulation based on the L 2-gradient flow and add three nonlocal Lagrange multipliers to the system to conserve the volume for each phase. Then, by combining the SAV approach with the stabilization technique, where a crucial linear stabilization term is added to enhance the stability and keep the required accuracy thus allowing large time steps, we arrive at a decoupled, linear, non-iterative, and volume-conserved scheme. This scheme is unconditionally energy stable and requires solving only four linear second-order elliptic equations with constant coefficients. We further prove energy stability and present numerous 2D and 3D numerical simulations to show accuracy and stability.
登录
查看更多内容
影响因子:
1.1
作者:
Jie Shen;Xiaofeng Yang
通讯作者:
Jie Shen;Xiaofeng Yang
DOI:
10.1137/110822839
发表时间:
2012
期刊:
SIAM J. Numer. Anal.
影响因子:
--
作者:
Jie Shen;Cheng Wang;Xiaoming Wang;S. Wise
通讯作者:
Jie Shen;Cheng Wang;Xiaoming Wang;S. Wise
DOI:
10.1137/0915089
发表时间:
1994-11
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
Jie Shen
通讯作者:
Jie Shen
DOI:
10.1016/j.aml.2019.03.029
发表时间:
2019-09
期刊:
Appl. Math. Lett.
影响因子:
--
作者:
Jun Zhang;Chuanjun Chen;Xiaofeng Yang
通讯作者:
Jun Zhang;Chuanjun Chen;Xiaofeng Yang
影响因子:
2.9
作者:
I. Romero
通讯作者:
I. Romero