报告人简介:
美国马里兰摩根州立大学教授,博导。主要从事数值分析,流体、弹性和生物力学的计算.侧重多物理和多区域问题的建模与计算. 在SIAM Journal on Numerical Analysis, SIAM Journal on Scientific Computing, Mathematics of Computation, Journal of Biomechanical Engineering, American Society of Mechanical Engineers, Journal of Biomechanics等有影响力的SCI期刊上发表论文40多篇,出版book chapters 2部,做大会或邀请报告共 80多次,MathSciNet及40多种计算数学, 计算物理,计算生物力学杂志评审专家, 组织并主持过学术会议:CBMS conference: Deep Learning and Numerical PDEs (2023).
报告简介:
Thermo-poroelastic models capture the interplay between elastic porous material deformation, fluid flow, and thermal effects under non-isothermal conditions. This talk presents a four-field formulation for the linear thermo-poroelastic model and introduces two novel algorithms. The first focuses on constructing parameter-robust preconditioners for the resulting linear system, proposing two approaches: one reorganizes variables into a 2-by-2 block structure, while the other directly addresses the 4-by-4 coupled operator. Both preconditioners exhibit robustness to parameter variations and mesh refinement. The second algorithm is a decoupled iterative finite element method, for which stability and optimal convergence are rigorously proven. Numerical experiments are provided to validate the effectiveness and efficiency of the proposed methods.