学术报告
应PP电子游戏网站EPM实验室王强教授和陈进博士的邀请，德国德累斯顿亥姆霍兹鲁森道夫中心流体所主任Dr. Gunter Gerbeth将于2017年3月14日访问EPM实验室并做学术报告,欢迎各位老师和同学参加！
报告题目：“Liquid metal MHD activities at HZDR Magnetic stirring and sonication of liquid metals”
报告时间：3月14日上午9:30-11:00
报告地点：EPM实验室四楼学术报告厅
Dr. Gunter Gerbeth简介：
德国德累斯顿亥姆霍兹鲁森道夫中心流体所主任(HZDR)Dr. G. Gerbeth从事液态金属流动研究30年，研究领域涉及流动测量、流动的磁场控制、磁流体力学; 以及磁场下的晶体生长及冶金过程。此外，在核快冷堆和太阳能发电站的金属冷却系统的开发、地球及天体物理中的动力效应、以及液体金属电池等方面也有深入研究。发表论文250篇以上，授权专利25项。多次主持协调欧盟项目，目前正负责亥姆霍兹联盟“液体金属项目LIMTECH)”，是著名杂志“Magnetohydrodynamics”的副主编。
报告摘要：
Abstract
An overview on liquid metal MHD activities at HZDR will be given, addressing briefly topics such as the dynamo experiments and the LIMMCAST program on modelling the continuous casting of metals.
In the main part a review is given on the stirring of metal melts by alternating (AC) magnetic fields, addressing the action of rotating, travelling, pulsating and superimposed steady (DC) magnetic fields.
Examples will be given on a tailored action of combinations of selected field types such as, for instance, the creation of tornado-like vortices or the modulated stirring in order to avoid macrosegregation
during solidification.
The final part will address recent studies on the insertion and dispersion of nanometer sized particles in metal melts. Such metal matrix nano-composites are a modern research subject as they are able to
provide significantly improved properties of various alloys compared to the same alloy without nano-particles inside. For light metals powerful ultrasound is known to provide a homogeneous distribution of
the nano-particles, thus avoiding the agglomeration of the particles due to strong forces between the particles. First results are presented on the contactless creation of cavitation by means of combined AC
and DC magnetic fields, the so-called magnetic sonication.
