报告题目： Structure preserving schemes for complex nonlinear systems

报告人：  Jie Shen, Purdue University

报告摘要：Many complex nonlinear systems have intrinsic structures such as energy dissipation or conservation, and/or positivity/maximum principle preserving. It is desirable, sometimes necessary, to preserve these structures in a numerical scheme. I will first present a new approach to deal with nonlinear terms in a large class of gradient flows and Hamiltonian systems. The approach is not restricted to specific forms of the nonlinear part of the free energy or Hamiltonian. It leads to linear and unconditionally energy stable schemes which only require solving decoupled linear equations with constant coefficients. Hence, these schemes are extremely efficient and very accurate when combined with higher-order BDF schemes.

报告时间：2019年6月4日（周二）10：00

报告地点：长清湖校区A231报告厅

欢迎各位老师和同学参加！