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数学系Seminar第1927期 非线性发展方程的并行数值方法

Created Date 10/10/2019 惠英   View Numbers  146 Return    
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报告主题:非线性发展方程的并行数值方法
报告人: Prof.Thiab Taha  (University of Georgia,USA)
报告时间:2019年10月30日(周三)14:00
报告地点: 校本部G507
邀请人:李常品 教授
主办部门:理学院数学系
报告摘要:
Recently, there has been a lot of theoretical and numerical research in order to study the role of nonlinear terms in Korteweg-de Vries-like equations K(m, n):
Ut + ( um)x + (un)xxx = 0, m > 1, n > 0,
Numerical simulations of solutions of K (m, 1) confirm that its solitary­ wave solutions are unstable if m > 4, and in fact, that neighboring solutions emanating from smooth initial data appear to form singularities in finite time. On the other hand, numerical simulations of solutions of K (m, n), for certain values of m and n, have shown that their solitary wave solutions have compact support.
In this paper an accurate numerical scheme based on a combination of finite difference and inverse scattering transform scheme is used to investigate the above results. A parallel algorithm for the implementation of this scheme on parallel computers is presented. This algorithm is implemented on an intel higher performance computer and the numerical results are discussed.

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