A fast direct solver for integral equations on locally refined boundary discretizations and its application to multiphase flow simulations
A fast direct solver for integral equations on locally refined boundary discretizations and its application to multiphase flow simulations
复制标题
局部细化边界离散积分方程的快速直接求解器及其在多相流模拟中的应用
DOI:
10.1007/s10444-022-09974-y
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发表时间:
2022
影响因子:
1.7
通讯作者:
Veerapaneni, Shravan
中科院分区:
文献类型:
--
作者:
Zhang, Yabin;Gillman, Adrianna;Veerapaneni, Shravan
In transient simulations of particulate Stokes flow, to accurately capture the interaction between the constituent particles and the confining wall, the discretization of the wall often needs to be locally refined in the region approached by the particles. Consequently, standard fast direct solvers lose their efficiency since the linear system changes at each time step. This manuscript presents a new computational approach that avoids this issue by pre-constructing a fast direct solver for the wall ahead of time, computing a low-rank factorization to capture the changes due to the refinement, and solving the problem on the refined discretization via a Woodbury formula. Numerical results illustrate the efficiency of the solver in accelerating particulate Stokes simulations.
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影响因子:
8.6
作者:
G. Ghigliotti;Abtin Rahimian;G. Biros;C. Misbah
通讯作者:
C. Misbah
DOI:
10.1016/j.jcp.2020.109524
发表时间:
2019-09
期刊:
J. Comput. Phys.
影响因子:
--
作者:
Wen Yan;Eduardo Corona;D. Malhotra;S. Veerapaneni;M. Shelley
通讯作者:
Wen Yan;Eduardo Corona;D. Malhotra;S. Veerapaneni;M. Shelley
影响因子:
2.1
作者:
S. Chandrasekaran;M. Gu
通讯作者:
M. Gu
影响因子:
3.1
作者:
Gary R. Marple;A. Barnett;A. Gillman;S. Veerapaneni
通讯作者:
S. Veerapaneni
影响因子:
4.1
作者:
Yabin Zhang;A. Gillman
通讯作者:
A. Gillman