应gg999策略手机白菜的邀请，西北工业大学张伟伟博士来我校进行学术交流并作学术报告： 

报告题目：Research progress on Node-based Mesh Generation and Its Application

报告时间：2019年1月3日，星期三，上午9:30-11:00   

报告地点：数学楼112

报告摘要:

In this talk, we develop a mesh adaptive algorithm that combines a posteriori error estimation with bubble-type local mesh generation (BLMG) strategy for elliptic differential equations. The proposed node-based adaptive mesh generation method consists of four components: mesh size modification, a node placement procedure, a node-based local mesh generation strategy and an error estimation technique, which are combined so as to guarantee obtaining a conforming refined/coarsened mesh. The size function used in the BLMG is defined on each vertex during the adaptive process based on the obtained error estimator. In order to avoid the excessive coarsening and refining in each iterative step, two factor thresholds are introduced in the size function. The refining and coarsening are obtained fluently in the same framework, and at all levels of refinement, the updated triangles remain very well shaped, even if the mesh size at any particular refinement level varies by several orders of magnitude.

报告人简介：

张伟伟，女，河南新乡人，博士。分别于2008年, 2011年和2015年在西北工业大学获得学士、硕士和博士学位，并留校参加工作至今。张伟伟博士长期从事自适应有限元网格生成、并行计算与模拟、流体计算方面的研究。在Comput. Phys. Commun.、J. Comput. Appl. Math.等国际和国内期刊发表学术论文16篇。目前主持国家自然科学基金青年项目1项、省部级项目2项、中央高校基础研究基金项目1项，主持完结西北工业大学科研启动基金和博士学位论文创新基金。2015年获得陕西高等学校科学技术奖一等奖（第三完成人），2016年获得陕西省科学技术奖二等奖（第三完成人），2017年获得陕西省优秀博士学位论文。