一、题目:
High order structure-preserving arbitrary Lagrangian-Eulerian methods for the shallow water equations
二、主讲人:
徐岩
三、摘要:
This work develops the structure-preserving discontinuous Galerkin methods and finite volume weighted essentially non-oscillatory (WENO) hybrid schemes for shallow water equations under the arbitrary Lagrangian-Eulerian (ALE) framework, which can preserve a general hydrostatic equilibrium state and positivity-preserving property under a suitable time step at the same time. By introducing well-balanced numerical fluxes and corresponding source term approximations, we established well-balanced schemes on moving mesh. We also discuss about the weak positivity property of the proposed schemes, and the positivity-preserving limiter can be applied to effectively enforce the positivity-preserving property. Numerical examples have been provided not only to demonstrate the good properties but also to show the advantages on moving mesh.
四、主讲人简介:
徐岩,中国科学技术大学数学科学学院教授。2005年于中国科学技术大学数学系获博士学位。2005-2007年在荷兰Twente大学从事博士后研究工作。2009年获德国洪堡基金会支持在德国Freiburg大学访问工作一年。主要研究领域为高精度数值计算方法。2008年度获全国优秀博士学位论文奖,2017年获国家自然科学基金委“优秀青年基金”。主持国家自然科学基金面上项目、德国洪堡基金会研究组合作计划(Research Group Linkage Programme)、霍英东青年教师基础研究课题等科研项目。担任J Sc Comput, Advances in Appl Math and Mech, Communication on Appl Math Comput、计算物理等杂志的编委。
五、邀请人:
芮洪兴 数学学院教授
六、时间:
11月17日(周四)16:00
七、地点:
腾讯会议
八、联系人:
宋军澎,联系方式:17862936075
九、主办:
山东大学数学学院