关于举办挪威卑尔根大学李艳副教授学术讲座的通知
发布时间: 2022-05-03

题目:地表重力波及其与海洋环境的相互作用:理论基础、畸形波的形成机理以及波浪模型

Surface gravity waves and their interaction with their ambient environment: theory, formation mechanism of rogue waves, and wave models

时间:202256日周五15301630

地点:腾讯会议 ID93382698531

腾讯直播间https://meeting.tencent.com/l/hA1SrLFrwFwl

报告人:李艳(挪威卑尔根大学,数学系应用流体力学方向)

主持人:周斌珍(船舶与海洋工程系),胡楠(土木工程系)

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土木与交通学院

202253



 

报告人简介:

李艳,博士,于20211月受聘为挪威卑尔根大学(UiB)数学系应用流体力学副教授。现为挪威自然科学基金项目主持人,挪威科技大学(NTNU)能源系FRIPRO-mobility独立研究员。自2017年获得博士学位以来,她曾先后在牛津大学工程系环境流体力学课题组作为入站博后(20188月至20199月)和国际访问学者(201912月至202112月)参与研究工作。她的研究兴趣包括但不限于畸形波的形成机制,基于薛定谔方程和快速傅里叶变换的多种波浪模拟理论,以及波浪和海洋环境(比如剪切流和变形海底)之间的相互作用等。她曾在JFM作为第一作者(和通讯)发表6篇文章,其中一篇作为JFM封面,一篇为独立作者,一篇在RAPIDS上进行发表,总共文章30余篇。李教授现在是EGU-NH5.2 板块主要组织者之一以及Frontiers in Marine Science特刊客座编辑。


Dr. Yan Li was appointed as an Associate Professor of (Applied) Fluid mechanics by the Department of Mathematics at the University of Bergen (UiB), Norway in January 2021.  She is currently a FRIPRO-mobility fellow at the Norwegian University of Science and Technology (NTNU). Since she obtained her PhD certificate in 2017, she has worked both as a postdoc (Aug.2018-Sep.2019) and an international visiting researcher (Dec.2019-Dec.2021) in the group of environmental fluid mechanics at the university of Oxford. Her research interests include (not limited to) the formation mechanism of rogue waves; the NLS- and FFTs-based wave modelling; the interaction between surface waves and their ambient environment, e.g., a shear current and a varying bathymetry.  She is the sole/first leading author of six publications on the Journal of Fluid Mechanics (or JFM RAPIDS) out of in total ~30 papers. She is a co-convener and guest editor of the EGU-NH5.2 session (2022) and the special issue ` Wave-Induced Particle Motions in the Ocean’ in the Frontiers in Marine Science, respectively.

 

报告摘要:

本次讲座将包含三个主要部分。首先,李教授将介绍她与合作者提出的畸形波的形成机理——畸形波是由于波浪经历了深度上的突变而形成的。而后,李教授将介绍她独立指导的有关新型NLS方程推导的工作,该工作发表在国际顶刊JFM上。该项新方程的提出,使得此前广泛应用在基于NLS方程设计的深水表面重力波演化模型中的窄带近似法得以拓展。最后在第三部分中,李教授将介绍在势流理论不适用的情况下,地表面波在深度相关流场中传播的新框架。

The talk of the speaker will include three main parts. The speaker will start with a formation mechanism of rogue waves which she and her collaborators proposed due to waves experiencing abrupt depth transitions. Following this, she will introduce her sole work associated with a new NLS-equation derived and published in one of her JFM papers. This newly derived NLS-equation relaxes the narrowband approximation widely employed for a NLS-based model for the evolution of deepwater surface gravity waves. In the third part, she will talk about a new framework for surface waves propagating in a depth dependent flow where potential flow theory is not applicable.