主讲人:翟术英 主讲人工作单位:华侨大学 时间: 2020年10月13日19:00 地点: 腾讯会议 ID: 559 852 179 主讲人简介:翟术英,华侨大学副教授,硕士生导师,研究方向:微分方程数值解和非局部相场模型的高效数值算法。目前主持国家自然科学基金青年基金、福建省自然科学基金面上项目和华侨大学中青年科技优秀创新项目各一项,已主持完成国家自然科学基金数学天元基金、博士后面上基金和福建省青年基金各一项;2015年获新疆维吾尔自治区“优秀博士学位论文”;2017年入选泉州市高层次人才和华侨大学“中青年教师科技优秀创新人才资助计划”,2018年入选“福建省杰出青年培育人才计划”和获得第十三届福建省自然科学优秀学术论文三等奖,在Journal of Computational Physics、Journal of Science Computing、Computer Physics Communications等期刊发表SCI收录论文30余篇,目前担任美国《Mathematical Review》评论员. 讲座主要内容:In this paper, we consider a fast explicit operator splitting method for a spatial fractional Cahn-Hilliard equation. The stability and convergence of the proposed method in L2-norm are studied. We also carry out a comparative study of two classical definitions for fractional Laplacian, and numerical results obtained using computational simulation of the fractional Cahn-Hilliard equation for a variety of choices of fractional order are presented. It is observed that the fractional order controls the sharpness of the interface, which is typically diffusive in integer-order phase-field models. |