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【学术讲座】“用于数值分析和纳米铝/O2爆震的自适应网格细化方法”主题报告
2018-09-04 08:23   国际合作处 审核人:   (点击: )

报告人:林光一教授

Speaker: Prof. A. Koichi Hayashi

主持人:任兆欣助理教授

Host:Asst. Prof. Zhaoxin Ren

时间:2018年09月07日(星期五)上午9:30-11:30

Time:9:30am-11:30am, Sep.7, 2018

地点:长安校区动力与能源学院大楼225会议室

Place: Conference room 225, School of Power and Energy

主题:用于数值分析和纳米铝/O2爆震的自适应网格细化方法

Topic: AMR method for numerical analysis and Nano Aluminum/O2 detonation

内容简介:

用于科学和工程问题的数值分析的规模越来越大。但是这种数值计算遇到了时间和成本的问题。为此,自1990年末以来开发了自适应网格细化(AMR)技术。早期AMR用于空间和大气问题,但最近的精确计算需要AMR方法用于小型分析,例如汽车发动机。本讲座将提供AMR的本质解释及其在燃烧射流问题中的应用。气固两相流动与气液两相流动完全不同。作为固相爆震问题的一个例子,将会展示铝/O2爆震问题。特别是当我们处理纳米尺寸的颗粒时,我们必须考虑这种纳米尺寸的问题。讲座将包括解释这样的问题进而展示纳米铝的爆震特征。

Introduction:

Numerical analysis for science and engineering problem is applied for a larger and larger scale. But such numerical calculation hits a problem of time and cost. To this end adaptive mesh refinement (AMR) technique has been developed since late 1990. In the early years AMR is used for space and atmospheric problems, but the recent accurate computation demands AMR method for small size analysis such as automobile engines. The present talk will provide the essence of AMR and its application to a combustive jet flow problem. Soli-gas two-phase flow is, in quite different from liquid-gas two-phase flow. As an example of solid-phase detonation problem, Aluminum/O2 detonation problem will be presented. Especially when we deals with nano-size particles, we must consider such nano-size problem. The talk will include to explain such problem to show the feature of nano-size aluminum detonation.

报告人简介

林光一,日本青山学院大学机械工程系教授。加州大学伯克利分校硕士,科罗拉多大学博尔得分校博士。林光一教授是爆震研究的国际领导者,最新的工作包括圆管和矩形管中爆震结构的三维详细数值计算,以及三维旋转爆震。现任国际激波会议咨询委员会委员,日本爆炸学会理事,《Proceedings of Combustion Institute》编委等。曾任日本爆震协会主席,《Shock Waves》编委等。曾获国际爆炸动力学和反应系统最高荣誉A. K. Oppenheim奖,波兰科学院Wactaw Cybulski奖章等。

Speaker’s Biography

A. Koichi Hayashiisthe professor in Aoyama Gakuin University. He obtained his M.Sc. in UC Berkeley and Ph.D. in University of Colorado, Boulder.Hehas been an international leader of detonation study. The most recent work includes three-dimensional detailed numerical calculation of detonation structures intubesandspinning detonations. He is the international advisory committee member of Int. Symp. on Shock Waves, board member of Japan Explosion Society, editorial board member ofProceedings of Combustion Institute, et al. He was the president of Detonation Society in Japan, editorial board member ofShock Waves, et al. He was awarded the A.K. Oppenheim Award from IDERS, Wactaw Cybulski Medal from Poland Academy of Science, et al.

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