报告题目：Developing Finite Element Solvers for Poroelasticity in the 2-fieldApproach

报 告 人：刘江国 教授 美国科罗拉多州立大学

报告时间：2019年8月22日9:30-10:30

报告地点：数学楼一楼第二报告厅

报告摘要：

Thistalk presents results from our recent efforts for reviving the 2-field (fluidpressure and solid displacement) approach for numerically solvingporoelasticity problems on quadrilateral meshes. The Darcy equation is solvedfor fluid pressure by the weak Galerkin finite element methods, which establishthe discrete weak gradient and numerical velocity in the Arbogast-Correaspaces. The elasticity equation is solved for solid displacement by theenriched Lagrangian elements, which were motivated by the Bernardi-Raugelelements for Stokes flow. These two types of solvers are coupled through theimplicit Euler temporal discretization to solve poroelasticity. Numericalexperiments on two widely tested benchmarks will be presented to demonstratethe new solvers are locking-free. Wediscuss also extension to 3-dim and implementation in deal.II. This is based ona series of joint work with several collaborators.

报告人简介：

刘江国，美国科罗拉多州立大学学教授、博士生导师、国际SCI期刊《Journal of Computational and Applied Mathematics》 副主编，SIAM Central States Section President，已发表学术论文40余篇，主持多项美国国家自然科学基金。