数学与系统科学研究院

计算数学所学术报告

报告人：        Song Shicang

Institute of Computational Mathematics and Scientific/Engineering Computing , CAS

报告题目 A Multiscale Asymptotic Expansion for a Class of Steady Heat Transfer Problem of Periodic Composite Materials

Abstract: In this talk, we will discuss a new asymptotic expansion for a class of steady heat transfer problems of periodic composite materials. When materials possess some symmetric properties, the classical scheme can be changed to a simple form and easy to solve. Compared to the classical form, the advantage is that the stronger H ¹_per (Q) periodic boundary condition of auxiliary equation is replaced with homogeneous boundary condition. This method is convenient for numerical computation, because the conforming element space for H¹₀(Q) is easier to be constructed than for H ¹_per (Q) . The new asymptotic expansion is still convergent to the solution of original problem. On the other hand, it satisfies boundary condition of the original problem, which can not be preserved in classical method.

报告时间：2004年10月27日  下午4：00-5：00

报告地点：科技综合楼三层报告厅