報(bào)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
時(shí)間：2018年09月07日（星期五）上午9:30-11:30
Time:9:30am-11:30am, Sep.7, 2018
地點(diǎn)：長(zhǎng)安校區(qū)動(dòng)力與能源學(xué)院大樓225會(huì)議室
Place: Conference room 225, School of Power and Energy
主題：用于數(shù)值分析和納米鋁/O2爆震的自適應(yīng)網(wǎng)格細(xì)化方法
Topic: AMR method for numerical analysis and Nano Aluminum/O2 detonation
內(nèi)容簡(jiǎn)介:
用于科學(xué)和工程問(wèn)題的數(shù)值分析的規(guī)模越來(lái)越大。但是這種數(shù)值計(jì)算遇到了時(shí)間和成本的問(wèn)題。為此，自1990年末以來(lái)開(kāi)發(fā)了自適應(yīng)網(wǎng)格細(xì)化（AMR）技術(shù)。早期A(yíng)MR用于空間和大氣問(wèn)題，但最近的精確計(jì)算需要AMR方法用于小型分析，例如汽車(chē)發(fā)動(dòng)機(jī)。本講座將提供AMR的本質(zhì)解釋及其在燃燒射流問(wèn)題中的應(yīng)用。氣固兩相流動(dòng)與氣液兩相流動(dòng)完全不同。作為固相爆震問(wèn)題的一個(gè)例子，將會(huì)展示鋁/O2爆震問(wèn)題。特別是當(dāng)我們處理納米尺寸的顆粒時(shí)，我們必須考慮這種納米尺寸的問(wèn)題。講座將包括解釋這樣的問(wèn)題進(jìn)而展示納米鋁的爆震特征。
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.
報(bào)告人簡(jiǎn)介
林光一，日本青山學(xué)院大學(xué)機(jī)械工程系教授。加州大學(xué)伯克利分校碩士，科羅拉多大學(xué)博爾得分校博士。林光一教授是爆震研究的國(guó)際領(lǐng)導(dǎo)者，最新的工作包括圓管和矩形管中爆震結(jié)構(gòu)的三維詳細(xì)數(shù)值計(jì)算，以及三維旋轉(zhuǎn)爆震。現(xiàn)任國(guó)際激波會(huì)議咨詢(xún)委員會(huì)委員，日本爆炸學(xué)會(huì)理事，《Proceedings of Combustion Institute》編委等。曾任日本爆震協(xié)會(huì)主席，《Shock Waves》編委等。曾獲國(guó)際爆炸動(dòng)力學(xué)和反應(yīng)系統(tǒng)最高榮譽(yù)A. K. Oppenheim獎(jiǎng)，波蘭科學(xué)院Wactaw Cybulski獎(jiǎng)?wù)碌取?/p>
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.
