瑞典隆德大学邱惟助理教授将于12月27日下午4点作线上学术报告，欢迎大家观看！

会议时间：2022/12/27 16:00 (GMT+08:00)

Zoom会议：834 4972 6948

会议密码：82668616

报告内容简介

Acoustic streaming is the time-averaged fluid motion that occurs when sound waves propagate in viscous fluids, which is typically associated with the dissipation of acoustic energy. Though the study of acoustic streaming has been conducted for more than one century since the seminal work from Rayleigh, Schlichting, and Eckart, it now becomes very active due to its importance in microscale acoustofluidics. In the past five years, the speaker worked intensively on the acoustic streaming in inhomogeneous fluids, which was an unexplored territory in the field. 

In this talk, we will first discuss the suppression of acoustic streaming in the inhomogeneity created by laminating two miscible fluids. This will be followed by the application of manipulating sub-micrometer particles using acoustophresis in streamingsuppressed environment. Then we will extend our discussion to the acoustic streaming in the temperature-gradient-induced inhomogeneity, a so-called thermoacoustic streaming the velocity of which is two orders of magnitude higher than that of Rayleigh streaming. Finally, we will talk about our very recent work regarding the thermoacoustic streaming induced by the frictional heating in the viscous boundary layer.

报告人简介

Wei Qiu obtained his Ph.D. degree from Precision and Intelligence Laboratory, Tokyo Institute of Technology. His Ph.D. study included a five-month research visit at Tribology Group, Imperial College London. He was selected as a JSPS Research Fellow for his Ph.D. and later postdoc work at Tokyo Institute of Technology. He subsequently joined Technical University of Denmark as an H.C. Ørsted COFUND Postdoc Fellow and Lund University as a Wenner-Gren Foreign Postdoc Fellow, before he took up a tenure-track assistant professor position at Department of Biomedical Engineering, Lund University. 

His research centers on physical acoustics, with the current focus on microscale acoustofluidics. He received several awards covering different aspects of his research activities, among which the most significant ones are the RWB Stephens Prize at International Congress on Ultrasonics, Terence Coakley Award at Acoustofluidics, and Seiichi Tejima Doctoral Dissertation Award from Tokyo Institute of Technology. He currently holds the 4 MSEK Starting Grant from Swedish Research Council.