报告题目：Computational Forensics for the Syrian Sarin Attack in April 2017：What Has Happened ? 

报告人：Goong Chen (Professor, Texas A&M University in College Station, Texas, USA)

主持人：袁利国 副教授

时 间：2017年11月29日（星期三）上午9：30-11：30

地 点：数学系713

报告摘要:  In the morning between 6~7am of April 4, 2017, a sarin chemical attack took place in Khan Shaykhun in the Idlib Governorate of Syria. It killed 86 people and injured more than 500. In this talk, we use the computer modeling tool of LS-DYNA to study and analyze them for forensics. The explosion model in LS-DYNA is the Jones-Wilkins-Lee (JWL-) Equation of State. This equation is to be coupled with the conservation of mass, momentum, energy and constitutive equations for the numerical computation and simulation of the explosion and fracture effects. We will indicate how to proceed with the computation with LS-DYNA and the input, and also how to do data validation. Supercomputer results the outputs are then visualized through several videos. Based on the videos, discussions and assessments about the chemical attack are then made. This research work is still ongoing and unfinished. Some future outlook will be provided.

中文摘要：2017年4月4日上午6时至7时早上，叙利亚伊德利卜省的汗谢伊汗发生沙林化学袭击事件。 它造成86人死亡，500多人受伤。在本次讲座中，我们使用LS-DYNA的计算机建模工具来研究和分析他们的犯罪过程以便取证。 LS-DYNA中的爆炸模型是Jones-Wilkins-Lee（JWL-）状态方程。 这个方程将与质量，动量，能量守恒和本构方程相结合，用于爆炸和断裂效应的数值计算和模拟。我们将指出如何使用LS-DYNA和输入进行计算，以及如何进行数据验证。 超级计算机的结果输出，然后通过几个视频可视化。根据视频对化学攻击进行讨论和评估。这项研究工作仍在进行中，尚未完成。将提供一些未来的研究方向。

报告人简介：Goong Chen，德州农工大学教授. 数学分析及应用杂志主编，and the Editor-in-Chief of the Elsevier/Academic Press’ Mathematics in Science and Engineering Book Series. He has served as the Editor-in-Chief of the Chapman & Hall/CRC Press Applied Mathematics and Nonlinear Science Series (2002-2011), and as Associate Editor for several other editorial boards, including the SIAM Journal on Control and Optimization, the International Journal on Quantum Information, Physica Scripta, and the Electronic Journal of Differential Equations. He is also a co-holder of a U.S. Patent on certain quantum circuit design for quantum computing. He has memberships in the American Mathematical Society (AMS) and the Society for Industrial and Applied Mathematics (SIAM).

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