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【直播】【清华燃烧能源中心】Cavitation near boundaries, in boundaries and...
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本次报告由清华燃烧能源中心主办，于2021年9月30日16:00开始，授权蔻享学术进行网络直播。
Cavitation near boundaries, in boundaries and due to boundaries
报告人
Claus-Dieter Ohl （Otto-von-Guericke-Universität Magdeburg, Germany）
时间
2021年9月30日 16:00
The phase change from liquid to vapour may or may not lead to fast fluid flows. In boiling, the bubbles - once formed - remain peaceful, yet when nucleated due to a transient pressure reduction they probe extreme conditions of matter during their collapse. While the spherical symmetry with its singular energy focusing ability has attracted a lot of attention, already slightest disturbances hampers the converging flow. What remains are non-spherical bubbles. In this this talk I will provide some overview on these particular flows that remain to be very forceful. The range of scenarios I will discuss are the bubble collapse near a simple and some complex rigid boundaries, cavitation in elastic solids, and cavitation created by surface waves on boundaries. The emphasis is on experiments, yet some of the phenomena are so fast and occur on such small volumes that numerical simulations are the last hope to understand what really goes on.
报告人介绍
图 | Claus-Dieter Ohl
Claus-Dieter Ohl (PhD Physics, U Göttingen, 1998) works experimentally on fundamental and applied fluid mechanics. He is interested in fast multiphase flows such as laser induced cavitation, sonoluminescence, shock waves in liquids and their medical applications, droplet fragmentation and recently a novel boiling regime. After a two postdoc positions at Johns Hopkins (Prof Prosperetti) and U Twente (Prof Lohse) he received the Dutch VIDI fellowship 2005 to focus on application of cavitation for drug delivery. In 2007 he joined Nanyang Technological University in Singapore and was tenured in 2012. During the 10 years at NTU his lab made important contributions to cavitation in microfluidics and soft materials, time-reversal acoustics, focused photoacoustics, and nanofluidics. In 2017 he was appointed as full Professor at the University of Magdeburg in Germany and is now setting up their Soft Matter department. In his spare time he explores how to make use of virtual reality for education.
清华大学燃烧能源中心直播&回放链接：
https://www.koushare.com/topic-sc/i/cce-tsinghua
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