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计算与应用讨论班

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2024-07

计算与应用讨论班——Fast integral equation methods and the DMK framework

报告人：蒋世东，Flatiron Insitute时间：2024年7月2日10:00-11:00 地点：浙江大学紫金港校区基础交叉研究院（筹）101会议室摘要：In this talk, we will first present an overview of fast integral equation methods (FIEMs). Fast algorithms, such as the fast multipole methods and their descendants, have made profound impacts on many areas of scientific computing. Boundary integral ...

2024-06

计算与应用讨论班——Highly efficient and accurate algorithms for constrained PDEs

报告人：程青（同济大学）时间：7月1日，14:00-16:00地点：海纳苑2幢206摘要：In the talk, I will introduce a new approach to construct efficient and accurate structure-preserving schemes for a class of constrained PDEs. To be more specific, I will introduce how to construct positivity/bound-preserving, length-preserving, energy-dissipative schemes for a large class of PDEs. I will establish stability ...

2024-06

计算与应用讨论班——Delay-dependent elliptic reconstruction and optimal $L^\infty(L^2)$ a posteriori error estimates for fully discrete delay parabolic problems

报告人：王晚生（上海师范大学）时间：2024年6月14日15:00-17:00地点：海纳苑2幢202摘要：We derive optimal order a posteriori error estimates for fully discrete approximations of linear parabolic delay differential equations (PDDEs), in the L∞(L2)-norm. For the discretization in time we use Backward Euler and Crank-Nicolson methods, while for the space discretization we use standard conforming finite ...

2024-06

计算与应用讨论班——Solving long-time nonlinear Schrodinger equation by a class of oscillation-relaxation integrators

报告人：王斌（西安交通大学）时间：2024年6月20日14:00地点：海纳苑2幢205摘要：In this talk, we are concerned with numerical integrators for the long time nonlinear Schrodinger equation. We propose a novel class of oscillation-relaxation integrators and study its convergence and energy conservation. The proposed integrators are shown to have improved uniform accuracy and nice near energy conservation...

2024-06

计算与应用讨论班——Advanced Numerical Methodologies for Fluid-Structure Interaction (FSI) Problems

报告人：Pengtao Sun（University of Nevada）时间：2024年6月14日10:00地点：海纳苑2幢101摘要：In this talk, I will present my resent research work on fluid-structure interaction (FSI) problems. The interaction of a flexible structure with a flowing fluid in which it is submersed or by which it is surrounded gives rise to a rich variety of physical phenomena with applications in many fi...

2024-05

计算与应用讨论班——On Variational and Hemivariational Inequalities in Fluid Mechanics

报告人：Professor Weimin Han, Department of Mathematics,University of Iowa时间：6月4日10:30-12:00地点：海纳苑2幢102摘要：Variational inequalities and hemivariational inequalities arise naturally in fluid mechanics for problems with nonsmooth boundary conditions or for non-Newtonian flows. In this talk, we review early works and present recent/new results on the inequality problems. ...

2024-04

计算与应用讨论班——基于几何化Clebsch映射的自由表面流算法

报告人：熊诗颖，（浙江大学，航空航天学院）时间：2024年4月24日，15:30地点：海纳苑2幢202室摘要：预量丛（prequantum bundle）的底空间是一个辛空间（symplectic manifold），全空间是一个切触空间（contact manifold），其通过投影映射将切触结构和辛结构联系起来。几何化Clebsch映射将流体运动空间映射到预量丛，将速度一形式（velocity 1-form）看成切触结构的拉回（pullback），将涡量二形式（vorticity 2-form）看成辛结构...

2024-04

计算与应用讨论班——Schaeffler at a Glance—— Bearinx Simulation Suite: Efficient, innovative and digital: Bearings go green

报告人：Oliver Graf-Goller（SCHAEFFLER）时间：2024年4月11日（周四）14:00地点：海纳苑2幢102室摘要：The talk will introduce simulation and development tools ofSchaeffler. It will cover the aspects on predicting relevant failuremodes and operating behavior such as advanced RCF prediction(e.g. different materials), surface-initiated damages (e.g. micro-pitting,wear) , smearing, false brinelling, cage ...

2024-03

计算与应用讨论班——Card Shuffle groups

报告人：夏彬㑇教授（墨尔本大学）时间: 2024年3月28日（周四）上午10:00-12:00地点：海纳苑2幢202摘要：Shuffling a deck of cards is often encountered in card tricks. There are a number of questions that may be of concern, such as how a shuffle changes the order of the deck, and how many different orderings can be obtained by shuffling the deck repeatedly. The latter question is to determine the permutat...

2024-03

计算与应用讨论班——Mathematical theory for in-gap eigenvalues in topological photonics/phononic systems

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