Interdisciplinary Summer School: Granular Flows-From Simulations to Astrophysical Applications; University of Maryland, College Park; June 13-17, 2011

一个跨学科的暑期学校将于2011年6月13日至17日在马里兰大学学院公园举行，题为“颗粒流--从模拟到天体物理应用”。其目的是将来自颗粒物理和天体物理的专家和学生聚集在一起，并专注于物理和天体物理中正在出现的颗粒流的最先进的实验和模拟方法。颗粒流在从小行星到行星岩石雪崩的各种天体物理应用中都会遇到。由于最近和计划对各种小行星、彗星和其他行星体的机器人任务，我们对这些流动的了解正在爆炸式增长。数据宝库现在正在分析，颗粒状排列的模式和颗粒状材料的样本正在返回进行分析。同时，在过去的二十年里，从描述阻塞转变到分析分离和三维流，在阐明颗粒流的物理方面取得了重大进展。对于颗粒流的基本物理来说，这些新的观测提供了一个前所未有的机会，可以应用过去几十年在颗粒流方面获得的知识，并将模型测试扩大到不同重力的区域，特别是小行星的极低重力区域。该学院将包括动手组件，在那里学生将学习如何模拟颗粒流，以及如何对流动模拟的结果进行批判性评估。耶鲁大学的Corey O？Hern和UMD的Derek Richardson将领导学生在下午进行直接数值模拟的实践培训。此外，稠密颗粒流实验研究的专家将培训学生进行颗粒流场和作用力的实验测量。

An Interdisciplinary Summer School will take place at the University of Maryland College Park June 13-17 2011 entitled "Granular Flows - From Simulations to Astrophysical Applications". The aim is to bring together experts and students from both granular physics and astrophysics and focus on state-of-the-art experimental and simulation approaches for granular flows that are emerging in both physics and astrophysics. Granular flows are encountered in a wide range of astrophysical applications from asteroids to planetary rock avalanches. Our knowledge about these flows is exploding due to recent and planned robotic missions to various asteroids, comets, and other planetary bodies. The trove of data is being analyzed now, with patterns of granular arrangements and samples of granular materials returning for analysis. At the same time, significant progress has been made over the last two decades to elucidate the physics of granular flows, from the description of the jamming transition, to analysis of segregation and 3-D flows. For basic physics of granular flows, these new observations offer an unprecedented opportunity to apply the knowledge gained in the last decades on granular flows, and to expand the test of models into a regime of varying gravity, in particular the very low gravity of asteroids. The school will include hands-on components where students will learn how to simulate granular flows and how to evaluate results from flow simulations critically. Corey O?Hern (Yale University) and Derek Richardson (UMD) will lead hands-on afternoon training sessions for students on direct numerical simulations. In addition, experts in experimental studies of dense granular flows will train students in experimental measurements of granular flow fields and forces.