应数学与统计学院的邀请，苏黎世联邦理工学院边鑫博士近期将访问我院，来访期间将为我院师生做学术报告：

报告题目： Multiscale Mechanics and Modeling of  Fluid Materials

报告时间：1月4日，星期五，上午10:00--11:30

报告地点：数学楼112

报告摘要：

Multiscale mechanics is ubiquitous in fluid materials such as paint, starch and blood. To understand, explore and exploit such mechanism, we have adopted a computational approach with an emphasis on high performance computing, and it is complemented by semi-analytical approaches. In particular, we model soft materials such as particulate and colloidal multiphase suspension flows at individual scales, and study the dynamics and rheology of these non-Newtonian fluids. For this research line, we adopt a topdown/continuum perspective and thermal fluctuations differentiate whether it is a macroscopic or mesoscopic description. The corresponding numerical methods adopted are smoothed particle hydrodynamics (SPH) and smoothed dissipative particle dynamics (SDPD). We also consider a bottom-up perspective by systematically coarse-graining (CG) systems with atomic details into models with much reduced degrees of freedom.   One of the rigorous CG strategies we employ is the Mori-Zwanzig (MZ) projection formalism from non-equilibrium statistical mechanics. One advantage of the MZ methodology is that not only the static, but also the dynamic properties of the detailed model can be reproduced accurately by the CG simulations. The corresponding numerical methods are molecular dynamics (MD), CG-MD, and dissipative particle dynamics (DPD). Furthermore, we also develop and analyze coupling strategies to simulate two or multiple scales concurrently on the fly, such as hybrid simulations of particle dynamics and continuum mechanics. To facilitate the method developments and popularize further their applications, we have released two high performance software packages. Along the different research lines, we show various applications such as blood cells related to the efforts of modeling and algorithm developments.

报告人简介：

边鑫，苏黎世联邦理工学院博士后。2006年在同济大学获得学士学位，分别于2008年和2015年在德国慕尼黑工业大学获得硕士和博士学位。2013年9月至2016年8月在美国布朗大学应用数学系做博士后。科研工作涉及高性能计算、流体力学、软物质物理、生物物理、化工工程处理等领域。曾获得德国自然科学基金和美国能源部基金资助。在国际权威期刊J. Comput. Phys.; Phys. Rev. E; J. Chem. Phys.; Phys. Fluid; Biophysics; Soft matter; J. Non-Newtonian Fluid. Mech.发表学术论文20余篇，被国际会议和学术机构邀请报告20余次，Google Scholar引用数达到450余次。