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【GIR公開セミナー】Dr. Claus-Dieter Ohl / オットー・フォン・ゲーリケ大学（ドイツ）

日時 2023.10.18（15：00～16：00）
会場

東京農工大学 小金井キャンパス 6号館 2階 201号室

Zoom

ミーティングID：828 7674 7984

パスコード：69703
Google Classroom コード 5e2tszl
講演者 Dr. Claus-Dieter Ohl
所属機関 オットー・フォン・ゲーリケ大学 （ドイツ）
講演タイトル "Cavitaton Bubbles interaction with hard and soft matter: from erosion to nucleation"

＜要旨＞
　Non-spherical cavitation bubble dynamics in liquids are known to create enormous shear stresses which may be even enhanced when the bubbles are entrained in a flow. Yet the mechanism by which cavitation creates erosion is through shock wave focusing and not related to the jet impact or a spherical energy focusing. It is actually the opposite; erosion results from the loss of axisymmety.
　Non-spherical cavitation in elastic solids generate shear waves that transport deformation energy to distances much larger than the local strain field. We will show that two shear waves with different orientation are generated near a boundary and their individual amplitude is a function of the stand-off distance. These waves can be recorded with acoustic plane wave imaging at very high frame rates. I’ll end the presentation with a mechanism through which cavitation is nucleated from shock-wave gas-bubble interaction in tissue.
言語 英語
対象 どなたでも、ご参加いただけます。
共催 グローバルイノベーション研究院 ライフサイエンス分野　田川チーム
卓越大学院プログラム
お問い合わせ窓口 グローバルイノベーション研究院・工学研究院　田川　義之
e-mail: tagawayo(ここに@ を入れてください）cc.tuat.ac.jp
備考

本セミナーは、オンライン・対面型の同時開催となります。
後日、Google Classroomでも公開いたします。

 

Professor Claus-Dieter Ohl
＜略歴＞
Professor Claus-Dieter Ohl has started his education into bubbles in Göttingen with the late Professor Werner Lauterborn. In 1999 he joined as a postdoc with Professor Andrea Prosperetti at Johns Hopkins University followed by Professor Detlef Lohse at the University of Twente. In 2005 he become VIDI fellow in Twente and started the research group “Jetting into cells”. In 2007 Prof. Ohl become Assistant Professor and in 2012 Associate Professor at the Nanyang Technological University. His research interest includes high-speed fluid mechanics, acoustics, nanobubbles, nucleation phenomena, boiling, and medical applications of cavitation. Since 2017 he joined as full Professor the Otto-von-Guericke University in Magdeburg where research into large empty bubbles started many centuries ago.

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